Alloy Steel Hex Drive Flat Head Screws

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Alloy Steel Hex Drive Flat Head Screws

Alloy Steel Hex Drive Flat Head Screws are precision-engineered for applications requiring a smooth, flush finish. Manufactured from premium materials and treated for enhanced durability, these fasteners provide exceptional structural integrity. Ideal for machinery, electronics, and construction, they ensure long-term reliability in demanding environments.

System of Measurement
Inch Metric
Specifications Met
ASME B18.3 ASTM F835 ASTM F835, MS24667-1 ASTM F835, MS24667-10 ASTM F835, MS24667-11 ASTM F835, MS24667-13 ASTM F835, MS24667-14 ASTM F835, MS24667-15 ASTM F835, MS24667-2 ASTM F835, MS24667-29 ASTM F835, MS24667-3 ASTM F835, MS24667-30 ASTM F835, MS24667-31 ASTM F835, MS24667-41 ASTM F835, MS24667-5 ASTM F835, MS24667-52 ASTM F835, MS24667-8 ASTM F835, MS24667-9 DIN 7991 DIN 7991, ISO 10642
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 5/16"-18 5/16"-24 3/8"-16 3/8"-24 7/16"-14 7/16"-20 1/2"-13 1/2"-20 5/8"-11 5/8"-18 3/4"-10 3/4"-16 7/8"-14 7/8"-9 1"-14 1"-8 1 1/8"-7 1 1/4"-12 1 1/4"-7 1 1/2"-6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30
Length
1/8" 5/32" 3/16" 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 5/8" 1 3/4" 2" 2 1/4" 2 1/2" 2 3/4" 3" 3 1/4" 3 1/2" 3 3/4" 4" 4 1/2" 5" 5 1/2" 6" 6 1/2" 7" 8" 9" 10" 11" 11 1/2" 12" 14" 4 mm 5 mm 6 mm 8 mm 10 mm 12 mm 14 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 90 mm 100 mm 110 mm 120 mm 130 mm 140 mm 160 mm
Material
Alloy Steel Black-Oxide Alloy Steel Blue-Dyed Zinc-Plated Alloy Steel Cadmium-Plated Alloy Steel Zinc-Plated Alloy Steel
Threading
Fully Threaded Partially Threaded
Head Diameter
0.138" 0.168" 0.187" 0.197" 0.226" 0.255" 0.262" 0.281" 0.307" 0.312" 0.359" 0.362" 0.411" 0.422" 0.438" 0.477" 0.531" 0.656" 0.717" 0.781" 0.844" 0.938" 1.188" 1.438" 1.688" 1.938" 2.188" 2.438" 2.938" 4 mm 5 mm 6 mm 8 mm 10 mm 12 mm 16 mm 20 mm 24 mm 27 mm 30 mm 33 mm 36 mm 39 mm 49 mm
Head Height
0.031" 0.042" 0.044" 0.047" 0.053" 0.054" 0.059" 0.064" 0.07" 0.073" 0.078" 0.081" 0.083" 0.09" 0.097" 0.099" 0.107" 0.112" 0.127" 0.134" 0.135" 0.161" 0.198" 0.234" 0.251" 0.324" 0.396" 0.468" 0.54" 0.611" 0.683" 0.827" 1.2 mm 1.5 mm 1.7 mm 2.3 mm 2.8 mm 3.3 mm 4.4 mm 5.5 mm 6.5 mm 7 mm 7.5 mm 8 mm 8.5 mm 14 mm 19.6 mm
Thread Pitch
0.4 mm 0.45 mm 0.5 mm 0.7 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
Thread Diameter
0.06" 0.073" 0.086" 0.099" 0.112" 0.125" 0.138" 0.164" 0.19" 0.216" 0.25" 0.313" 0.375" 0.438" 0.5" 0.625" 0.75" 0.875" 1" 1.125" 1.25" 1.5"
Thread Type
Metric UNC UNF UNS
Fastener Strength Grade/Class
Class 10.9 Class 12.9
Drive Size
0.035" 0.050" 1 mm 1" 1.3 mm 1.5 mm 1/16" 1/2" 1/4" 1/8" 10 mm 12 mm 14 mm 19 mm 2 mm 2.5 mm 3 mm 3/16" 3/32" 3/4" 3/8" 4 mm 5 mm 5/16" 5/32" 5/64" 5/8" 6 mm 7/32" 7/8" 8 mm 9/16"
Tensile Strength
120000 psi 130000 psi 140000 psi 170000 psi
Show more▼
Part Number Thread Size Length Threading Specifications Met Thread Type Head Diameter Head Height Material Tensile Strength Hardness
0309FA00330 3/8"-16 1" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00595 3/8"-16 1" Fully Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0311FA00014 3/8"-16 1" Fully Threaded ASTM F835, MS24667-52 UNC 0.781" 0.234" Cadmium-Plated Alloy Steel 140000 psi Rockwell C39
0309FA00241 3/8"-16 1 1/8" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00331 3/8"-16 1 1/4" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00596 3/8"-16 1 1/4" Fully Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00242 3/8"-16 1 3/8" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00332 3/8"-16 1 1/2" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00597 3/8"-16 1 1/2" Fully Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00243 3/8"-16 1 5/8" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00333 3/8"-16 1 3/4" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00598 3/8"-16 1 3/4" Fully Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00334 3/8"-16 2" Fully Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00599 3/8"-16 2" Fully Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00503 3/8"-16 2 1/4" Partially Threaded ASME B18.3 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00335 3/8"-16 2 1/4" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00336 3/8"-16 2 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00600 3/8"-16 2 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00337 3/8"-16 2 3/4" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00338 3/8"-16 3" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00601 3/8"-16 3" Partially Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00339 3/8"-16 3 1/4" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00340 3/8"-16 3 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00602 3/8"-16 3 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00341 3/8"-16 3 3/4" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00504 3/8"-16 4" Partially Threaded ASME B18.3 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00342 3/8"-16 4" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00343 3/8"-16 4 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00505 3/8"-16 5" Partially Threaded ASME B18.3 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00344 3/8"-16 5" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00345 3/8"-16 5 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00506 3/8"-16 6" Partially Threaded ASME B18.3 UNC 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00346 3/8"-16 6" Partially Threaded ASTM F835 UNC 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00033 3/8"-16 6 1/2" Partially Threaded ASTM F835 UNC 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00451 3/8"-16 7" Partially Threaded ASTM F835 UNC 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00245 3/8"-24 1/2" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00244 3/8"-24 5/8" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00246 3/8"-24 3/4" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00624 3/8"-24 3/4" Fully Threaded ASTM F835 UNF 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00247 3/8"-24 7/8" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00248 3/8"-24 1" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00625 3/8"-24 1" Fully Threaded ASTM F835 UNF 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00507 3/8"-24 1 1/4" Fully Threaded ASME B18.3 UNF 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00250 3/8"-24 1 1/4" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00252 3/8"-24 1 1/2" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00626 3/8"-24 1 1/2" Fully Threaded ASTM F835 UNF 0.781" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00253 3/8"-24 1 3/4" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00508 3/8"-24 2" Fully Threaded ASME B18.3 UNF 0.781" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00256 3/8"-24 2" Fully Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00257 3/8"-24 2 1/4" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00258 3/8"-24 2 1/2" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00020 3/8"-24 2 3/4" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00260 3/8"-24 3" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00021 3/8"-24 3 1/4" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00263 3/8"-24 3 1/2" Partially Threaded ASTM F835 UNF 0.781" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00034 3/8"-24 4" Partially Threaded ASTM F835 UNF 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00035 3/8"-24 5" Partially Threaded ASTM F835 UNF 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00036 3/8"-24 5 1/2" Partially Threaded ASTM F835 UNF 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00037 3/8"-24 6" Partially Threaded ASTM F835 UNF 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00038 3/8"-24 7" Partially Threaded ASTM F835 UNF 0.781" 0.234" Alloy Steel 130000 psi Rockwell C39
0309FA00273 7/16"-14 1/2" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00347 7/16"-14 3/4" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00627 7/16"-14 3/4" Fully Threaded ASTM F835 UNC 0.844" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00022 7/16"-14 7/8" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00348 7/16"-14 1" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00628 7/16"-14 1" Fully Threaded ASTM F835 UNC 0.844" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00509 7/16"-14 1 1/4" Fully Threaded ASME B18.3 UNC 0.844" 0.234" Zinc-Plated Alloy Steel 120000 psi Rockwell C32
0309FA00349 7/16"-14 1 1/4" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00351 7/16"-14 1 1/2" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00629 7/16"-14 1 1/2" Fully Threaded ASTM F835 UNC 0.844" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00352 7/16"-14 1 3/4" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00354 7/16"-14 2" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00350 7/16"-14 2 1/4" Fully Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00353 7/16"-14 2 1/2" Partially Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00355 7/16"-14 3" Partially Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00023 7/16"-14 3 1/2" Partially Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00024 7/16"-14 4" Partially Threaded ASTM F835 UNC 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00274 7/16"-20 3/4" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00630 7/16"-20 3/4" Fully Threaded ASTM F835 UNF 0.844" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00275 7/16"-20 1" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00631 7/16"-20 1" Fully Threaded ASTM F835 UNF 0.844" 0.234" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00276 7/16"-20 1 1/4" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00277 7/16"-20 1 1/2" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00025 7/16"-20 1 3/4" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00278 7/16"-20 2" Fully Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00026 7/16"-20 2 1/2" Partially Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00027 7/16"-20 3" Partially Threaded ASTM F835 UNF 0.844" 0.234" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00356 1/2"-13 1/2" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00288 1/2"-13 5/8" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00358 1/2"-13 3/4" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00603 1/2"-13 3/4" Fully Threaded ASTM F835 UNC 0.938" 0.251" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00357 1/2"-13 7/8" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00359 1/2"-13 1" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00604 1/2"-13 1" Fully Threaded ASTM F835 UNC 0.938" 0.251" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00360 1/2"-13 1 1/8" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00361 1/2"-13 1 1/4" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00605 1/2"-13 1 1/4" Fully Threaded ASTM F835 UNC 0.938" 0.251" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
0309FA00362 1/2"-13 1 3/8" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00363 1/2"-13 1 1/2" Fully Threaded ASTM F835 UNC 0.938" 0.251" Black-Oxide Alloy Steel 130000 psi Rockwell C39
0309FA00606 1/2"-13 1 1/2" Fully Threaded ASTM F835 UNC 0.938" 0.251" Zinc-Plated Alloy Steel 130000 psi Rockwell C39
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