Alloy Steel Socket Head Screws

2432 products

Alloy Steel Socket Head Screws

Our Alloy Steel Socket Head Screws are manufactured to the highest industry standards, ensuring exceptional strength and performance. Whether you require the high tensile strength of alloy steel or the superior corrosion resistance of stainless steel, these fasteners are optimized for precision assembly. Ideal for use in machinery, automotive components, and structural applications, they provide a dependable solution for your most critical fastening needs. Explore our selection to find the exact specifications required for your project.

System of Measurement
Inch Metric
Specifications Met
ASME B18.3, ASTM A574 ASME B18.3, ASTM A574, ASTM B117 ASME B18.3.1M, ASTM A574M ASTM A574 ASTM A574M, DIN 912, ISO 4762 ASTM B117, DIN 912, ISO 4762 DIN 912 DIN 912, ISO 21269 DIN 912, ISO 4762 DIN 912, ISO 4762, ISO 898-1
Thread Size
0-80 1-64 1-72 2-56 2-64 3-48 3-56 4-40 4-48 5-40 5-44 6-32 6-40 8-32 8-36 10-24 10-32 12-24 1/4"-20 1/4"-28 1/4"-32 5/16"-18 5/16"-24 5/16"-32 3/8"-16 3/8"-24 7/16"-14 7/16"-20 1/2"-13 1/2"-20 9/16"-12 9/16"-18 5/8"-11 5/8"-18 3/4"-10 3/4"-16 7/8"-14 7/8"-9 1"-12 1"-14 1"-8 1 1/8"-12 1 1/8"-7 1 1/4"-12 1 1/4"-7 1 3/8"-6 1 1/2"-12 1 1/2"-6 1 3/4"-5 2"-4 1/2 2"-8 2 1/4"-4 1/2 2 1/4"-8 2 1/2"-4 2 1/2"-8 M1.4 M1.6 M2 M2.5 M2.6 M3 M3.5 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M42 M48
Length
1/16" 3/32" 1/8" 5/32" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 7/8" 1" 1 1/8" 1 1/4" 1 3/8" 1 1/2" 1 5/8" 1 3/4" 1 7/8" 2" 2 1/4" 2 3/8" 2 1/2" 2 5/8" 2 3/4" 3" 3 1/4" 3 1/2" 3 3/4" 4" 4 1/4" 4 3/8" 4 1/2" 4 3/4" 5" 5 1/4" 5 1/2" 5 3/4" 6" 6 1/4" 6 1/2" 6 3/4" 7" 7 1/4" 7 1/2" 8" 8 1/2" 9" 9 1/2" 10" 10 1/2" 11" 12" 13" 14" 15" 16" 18" 20" 2 mm 3 mm 4 mm 5 mm 6 mm 8 mm 10 mm 12 mm 14 mm 15 mm 16 mm 18 mm 20 mm 22 mm 25 mm 30 mm 35 mm 40 mm 45 mm 50 mm 55 mm 60 mm 65 mm 70 mm 75 mm 80 mm 85 mm 90 mm 95 mm 100 mm 110 mm 120 mm 130 mm 140 mm 150 mm 160 mm 170 mm 180 mm 190 mm 200 mm 210 mm 220 mm 240 mm 260 mm 300 mm 320 mm 340 mm 360 mm 400 mm
Material
Black-Oxide Alloy Steel Blue-Dyed Zinc-Plated Alloy Steel Zinc-Flake-Coated Alloy Steel Zinc-Plated Alloy Steel
Threading
Fully Threaded Partially Threaded
Head Diameter
0.096" 0.118" 9/64" 0.161" 0.183" 0.205" 0.226" 0.27" 5/16" 0.324" 3/8" 15/32" 9/16" 21/32" 3/4" 27/32" 15/16" 1 1/8" 1 5/16" 1 1/2" 1 11/16" 1 7/8" 2 1/16" 2 1/4" 2 5/8" 3" 3 3/8" 3 3/4" 2.5 mm 3 mm 3.8 mm 4.5 mm 5 mm 5.5 mm 6 mm 6.2 mm 7 mm 8.5 mm 10 mm 12 mm 13 mm 16 mm 18 mm 21 mm 24 mm 27 mm 30 mm 33 mm 36 mm 40 mm 45 mm 50 mm 54 mm 63 mm 72 mm
Head Height
0.06" 0.073" 0.086" 0.099" 0.112" 1/8" 0.138" 0.164" 0.19" 0.216" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 3/4" 7/8" 1" 1 1/8" 1 1/4" 1 3/8" 1 1/2" 1 3/4" 2" 2 1/4" 2 1/2" 1.4 mm 1.6 mm 2 mm 2.5 mm 2.6 mm 3 mm 3.5 mm 4 mm 5 mm 6 mm 7 mm 8 mm 10 mm 12 mm 14 mm 16 mm 18 mm 20 mm 22 mm 24 mm 27 mm 30 mm 33 mm 36 mm 42 mm 48 mm
Thread Pitch
0.3 mm 0.35 mm 0.4 mm 0.45 mm 0.5 mm 0.6 mm 0.7 mm 0.75 mm 0.8 mm 1 mm 1.25 mm 1.5 mm 1.75 mm 2 mm 2.5 mm 3 mm 3.5 mm 4 mm 4.5 mm 5 mm
Thread Diameter
0.06" 0.073" 0.086" 0.099" 0.112" 0.125" 0.138" 0.164" 0.19" 0.216" 0.25" 0.3125" 0.375" 0.4375" 0.5" 0.5625" 0.625" 0.75" 0.875" 1" 1.125" 1.25" 1.375" 1.5" 1.75" 2" 2.25" 2.5"
Thread Type
Metric UN UNC UNEF UNF UNRC UNRF
Drive Size
0.050" 1 1/2" 1 1/4" 1 3/4" 1" 1.3 mm 1.5 mm 1/16" 1/2" 1/4" 10 mm 12 mm 14 mm 17 mm 19 mm 2 mm 2.5 mm 22 mm 24 mm 27 mm 3 mm 3/16" 3/32" 3/4" 3/8" 32 mm 36 mm 4 mm 5 mm 5/16" 5/32" 5/64" 5/8" 6 mm 7/16" 7/64" 7/8" 8 mm 9/64"
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Part Number Thread Size Length Threading Specifications Met Thread Type Head Diameter Head Height Material Tensile Strength Hardness
0009FA00060 5/8"-11 4" Fully Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00554 5/8"-11 4" Partially Threaded ASTM A574 UNC 15/16" 5/8" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01242 5/8"-11 4" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01243 5/8"-11 4 1/4" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00472 5/8"-11 4 1/2" Partially Threaded ASTM A574 UNC 15/16" 5/8" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01244 5/8"-11 4 1/2" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01245 5/8"-11 4 3/4" Partially Threaded ASTM A574 UNC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00061 5/8"-11 5" Fully Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00473 5/8"-11 5" Partially Threaded ASTM A574 UNC 15/16" 5/8" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01246 5/8"-11 5" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01247 5/8"-11 5 1/4" Partially Threaded ASTM A574 UNC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00474 5/8"-11 5 1/2" Partially Threaded ASTM A574 UNC 15/16" 5/8" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01248 5/8"-11 5 1/2" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00062 5/8"-11 6" Fully Threaded ASTM A574 UNC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00475 5/8"-11 6" Partially Threaded ASTM A574 UNC 15/16" 5/8" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01250 5/8"-11 6" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01251 5/8"-11 6 1/2" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01252 5/8"-11 7" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01253 5/8"-11 7 1/2" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01254 5/8"-11 8" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01255 5/8"-11 8 1/2" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00718 5/8"-11 9" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01256 5/8"-11 9 1/2" Partially Threaded ASTM A574 UNC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00719 5/8"-11 10" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00720 5/8"-11 11" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00721 5/8"-11 12" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01381 5/8"-11 13" Partially Threaded ASTM A574 UNC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00122 5/8"-11 14" Partially Threaded ASTM A574 UNRC 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA02313 5/8"-18 3/4" Fully Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01020 5/8"-18 1" Fully Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01021 5/8"-18 1 1/4" Fully Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01022 5/8"-18 1 1/2" Fully Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00936 5/8"-18 1 3/4" Fully Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00938 5/8"-18 2" Fully Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01009 5/8"-18 2 1/4" Fully Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00940 5/8"-18 2 1/2" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01010 5/8"-18 2 3/4" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01011 5/8"-18 3" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01025 5/8"-18 3 1/4" Partially Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01012 5/8"-18 3 1/2" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01026 5/8"-18 3 3/4" Partially Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01013 5/8"-18 4" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01014 5/8"-18 4 1/2" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01015 5/8"-18 5" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01027 5/8"-18 5 1/2" Partially Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01105 5/8"-18 6" Partially Threaded ASTM A574 UNRF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01028 5/8"-18 6 1/2" Partially Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01029 5/8"-18 7" Partially Threaded ASTM A574 UNF 15/16" 5/8" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01261 3/4"-10 3/4" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00297 3/4"-10 1" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01263 3/4"-10 1" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01264 3/4"-10 1 1/4" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01038 3/4"-10 1 3/8" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01509 3/4"-10 1 1/2" Fully Threaded ASME B18.3, ASTM A574, ASTM B117 UNC 1 1/8" 3/4" Zinc-Flake-Coated Alloy Steel 170000 psi Rockwell C37
0009FA00566 3/4"-10 1 1/2" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01266 3/4"-10 1 1/2" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01510 3/4"-10 1 3/4" Fully Threaded ASME B18.3, ASTM A574, ASTM B117 UNC 1 1/8" 3/4" Zinc-Flake-Coated Alloy Steel 170000 psi Rockwell C37
0009FA00567 3/4"-10 1 3/4" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01268 3/4"-10 1 3/4" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01512 3/4"-10 2" Fully Threaded ASME B18.3, ASTM A574, ASTM B117 UNC 1 1/8" 3/4" Zinc-Flake-Coated Alloy Steel 170000 psi Rockwell C37
0009FA00568 3/4"-10 2" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01270 3/4"-10 2" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00569 3/4"-10 2 1/4" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01271 3/4"-10 2 1/4" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00570 3/4"-10 2 1/2" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01272 3/4"-10 2 1/2" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01513 3/4"-10 2 1/2" Partially Threaded ASME B18.3, ASTM A574, ASTM B117 UNC 1 1/8" 3/4" Zinc-Flake-Coated Alloy Steel 170000 psi Rockwell C37
0009FA00571 3/4"-10 2 3/4" Fully Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01273 3/4"-10 2 3/4" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00063 3/4"-10 3" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01514 3/4"-10 3" Partially Threaded ASME B18.3, ASTM A574, ASTM B117 UNC 1 1/8" 3/4" Zinc-Flake-Coated Alloy Steel 170000 psi Rockwell C37
0009FA00572 3/4"-10 3" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01274 3/4"-10 3" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01275 3/4"-10 3 1/4" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00064 3/4"-10 3 1/2" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00573 3/4"-10 3 1/2" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01276 3/4"-10 3 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00722 3/4"-10 3 3/4" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00065 3/4"-10 4" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00574 3/4"-10 4" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01277 3/4"-10 4" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00654 3/4"-10 4 1/4" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00575 3/4"-10 4 1/2" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01278 3/4"-10 4 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00662 3/4"-10 4 3/4" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00066 3/4"-10 5" Fully Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00576 3/4"-10 5" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01279 3/4"-10 5" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00915 3/4"-10 5 1/4" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01280 3/4"-10 5 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00916 3/4"-10 5 3/4" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00578 3/4"-10 6" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Zinc-Plated Alloy Steel 170000 psi Rockwell C37
0009FA01281 3/4"-10 6" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01282 3/4"-10 6 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00918 3/4"-10 6 3/4" Partially Threaded ASTM A574 UNC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01283 3/4"-10 7" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00723 3/4"-10 7 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA01284 3/4"-10 8" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00724 3/4"-10 8 1/2" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
0009FA00725 3/4"-10 9" Partially Threaded ASTM A574 UNRC 1 1/8" 3/4" Black-Oxide Alloy Steel 170000 psi Rockwell C37
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