Stainless Steel Hex Drive Flat Head Screws

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Stainless Steel Hex Drive Flat Head Screws

Stainless 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 ASME B18.3, ASTM F879 ASME B18.3, ASTM F879, MIL-DTL-18240 ASTM A276 DIN 7991 DIN 7991, ISO 10642 QQ-P-35, MS24671-1 QQ-P-35, MS24671-10 QQ-P-35, MS24671-11 QQ-P-35, MS24671-13 QQ-P-35, MS24671-14 QQ-P-35, MS24671-16 QQ-P-35, MS24671-17 QQ-P-35, MS24671-19 QQ-P-35, MS24671-2 QQ-P-35, MS24671-20 QQ-P-35, MS24671-21 QQ-P-35, MS24671-22 QQ-P-35, MS24671-23 QQ-P-35, MS24671-28 QQ-P-35, MS24671-29 QQ-P-35, MS24671-3 QQ-P-35, MS24671-30 QQ-P-35, MS24671-31 QQ-P-35, MS24671-33 QQ-P-35, MS24671-4 QQ-P-35, MS24671-40 QQ-P-35, MS24671-41 QQ-P-35, MS24671-43 QQ-P-35, MS24671-5 QQ-P-35, MS24671-51 QQ-P-35, MS24671-52 QQ-P-35, MS24671-7 QQ-P-35, MS24671-8 QQ-P-35, MS24671-9
Thread Size
0-80 1-64 1-72 2-56 3-48 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 1"-8 M2 M2.5 M3 M3.5 M4 M5 M6 M8 M10 M12 M14 M16 M20
Length
1/8" 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 1/2" 2 3/4" 3" 3 1/4" 3 1/2" 3 3/4" 4" 4 1/2" 5" 5 1/2" 6" 7" 8" 10" 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 90 mm 100 mm 110 mm 120 mm 140 mm
Material
18-8 Stainless Steel 316 Stainless Steel
Threading
Fully Threaded Partially Threaded
Head Diameter
0.138" 0.168" 0.197" 0.212" 0.226" 0.255" 0.281" 0.307" 0.359" 0.411" 0.438" 0.531" 0.656" 0.781" 0.844" 0.937" 0.938" 1.188" 1.438" 1.938" 4 mm 5 mm 6 mm 7 mm 8 mm 10 mm 12 mm 16 mm 20 mm 24 mm 27 mm 30 mm 36 mm
Head Height
0.035" 0.044" 0.047" 0.054" 0.059" 0.064" 0.066" 0.068" 0.073" 0.076" 0.083" 0.084" 0.089" 0.09" 0.097" 0.105" 0.112" 0.12" 0.127" 0.134" 0.157" 0.161" 0.181" 0.198" 0.234" 0.251" 0.324" 0.396" 0.54" 1.2 mm 1.3 mm 1.5 mm 1.6 mm 1.7 mm 1.9 mm 2 mm 2.2 mm 2.3 mm 2.8 mm 3.3 mm 3.5 mm 4.2 mm 4.4 mm 5.5 mm 6.5 mm 7 mm 7.5 mm 8.5 mm
Thread Pitch
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
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" 1"
Thread Type
Metric UNC UNF
Finish
Black Oxide Black-Oxide, Passivated Passivated
Drive Size
0.035" 0.050" 1.3 mm 1.5 mm 1/16" 1/2" 1/4" 1/8" 10 mm 12 mm 2 mm 2.5 mm 3 mm 3/16" 3/32" 3/8" 4 mm 5 mm 5/16" 5/32" 5/64" 5/8" 6 mm 7/32" 8 mm
Tensile Strength
70000 psi 100000 psi
Show more▼
Part Number Thread Size Length Threading Specifications Met Thread Type Head Diameter Head Height Material Tensile Strength Hardness
0312FA00451 5/16"-18 1 1/2" Partially Threaded - UNC 0.656" 0.127" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00264 5/16"-18 1 5/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00265 5/16"-18 1 3/4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00176 5/16"-18 1 3/4" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00452 5/16"-18 1 3/4" Partially Threaded - UNC 0.656" 0.127" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00266 5/16"-18 1 7/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00267 5/16"-18 2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00155 5/16"-18 2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00453 5/16"-18 2" Partially Threaded - UNC 0.656" 0.127" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00268 5/16"-18 2 1/4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00038 5/16"-18 2 1/4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00269 5/16"-18 2 1/2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00156 5/16"-18 2 1/2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00270 5/16"-18 2 3/4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00271 5/16"-18 3" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00157 5/16"-18 3" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00079 5/16"-18 3 1/4" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00272 5/16"-18 3 1/2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00158 5/16"-18 3 1/2" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00273 5/16"-18 4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00159 5/16"-18 4" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00364 5/16"-18 4 1/2" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00365 5/16"-18 5" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00177 5/16"-18 5" Fully Threaded ASME B18.3, ASTM F879 UNC 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00196 5/16"-18 6" Fully Threaded ASME B18.3 UNC 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00274 5/16"-24 1/2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00181 5/16"-24 1/2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00275 5/16"-24 5/8" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00178 5/16"-24 5/8" Fully Threaded ASME B18.3, ASTM F879 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00276 5/16"-24 3/4" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00082 5/16"-24 3/4" Fully Threaded ASME B18.3, ASTM F879 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00280 5/16"-24 7/8" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00277 5/16"-24 1" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00083 5/16"-24 1" Fully Threaded ASME B18.3, ASTM F879 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00278 5/16"-24 1 1/4" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00182 5/16"-24 1 1/4" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00279 5/16"-24 1 1/2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00084 5/16"-24 1 1/2" Fully Threaded ASME B18.3, ASTM F879 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00281 5/16"-24 2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00085 5/16"-24 2" Fully Threaded ASME B18.3, ASTM F879 UNF 0.656" 0.198" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00197 5/16"-24 2 1/2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00198 5/16"-24 3" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00199 5/16"-24 3 1/2" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00200 5/16"-24 4" Fully Threaded ASME B18.3 UNF 0.656" 0.198" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00282 3/8"-16 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00061 3/8"-16 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00283 3/8"-16 5/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00040 3/8"-16 5/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00284 3/8"-16 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00382 3/8"-16 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00160 3/8"-16 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0317FA00028 3/8"-16 3/4" Fully Threaded QQ-P-35, MS24671-51 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Not Rated
0312FA00454 3/8"-16 3/4" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00285 3/8"-16 7/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00041 3/8"-16 7/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00286 3/8"-16 1" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00383 3/8"-16 1" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00161 3/8"-16 1" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0317FA00029 3/8"-16 1" Fully Threaded QQ-P-35, MS24671-52 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Not Rated
0312FA00455 3/8"-16 1" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0314FA00042 3/8"-16 1 1/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00287 3/8"-16 1 1/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00288 3/8"-16 1 1/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00162 3/8"-16 1 1/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00456 3/8"-16 1 1/4" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0314FA00043 3/8"-16 1 3/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00289 3/8"-16 1 3/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00290 3/8"-16 1 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00384 3/8"-16 1 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00163 3/8"-16 1 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00457 3/8"-16 1 1/2" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0314FA00044 3/8"-16 1 5/8" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00291 3/8"-16 1 5/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00292 3/8"-16 1 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00164 3/8"-16 1 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00458 3/8"-16 1 3/4" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00293 3/8"-16 1 7/8" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00294 3/8"-16 2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00165 3/8"-16 2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00459 3/8"-16 2" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00295 3/8"-16 2 1/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00045 3/8"-16 2 1/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00296 3/8"-16 2 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00166 3/8"-16 2 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00460 3/8"-16 2 1/2" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00297 3/8"-16 2 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00046 3/8"-16 2 3/4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00298 3/8"-16 3" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00167 3/8"-16 3" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00461 3/8"-16 3" Partially Threaded - UNC 0.781" 0.157" 18-8 Stainless Steel 70000 psi Rockwell B70
0312FA00080 3/8"-16 3 1/4" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0312FA00299 3/8"-16 3 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00168 3/8"-16 3 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00300 3/8"-16 4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00169 3/8"-16 4" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00308 3/8"-16 4 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00086 3/8"-16 4 1/2" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00301 3/8"-16 5" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
0314FA00087 3/8"-16 5" Fully Threaded ASME B18.3, ASTM F879 UNC 0.781" 0.234" 316 Stainless Steel 70000 psi Rockwell B55
0312FA00201 3/8"-16 5 1/2" Fully Threaded ASME B18.3 UNC 0.781" 0.234" 18-8 Stainless Steel 70000 psi Rockwell B55
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