18-8 SS Socket Set Screw
Choose Favorites List

18-8 SS Socket Set Screw

ASTM F880 stainless steel socket set screws are a headless fastener threaded its entire length (except for the point) used commonly for fastening mated parts such as a shaft and collar. The F912 specification covers the requirements for austenitic grade stainless steel socket-set screws. Dimensional specifications are governed by ASME B18.3. The socket set screw's headless design allows the fastener to sit flush, or inset into the threaded part. Stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resistance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel.

 

Governing StandardsStainless Steel Socket Set Screw

ASTM F880 This specification covers the requirements for austenitic grade stainless steel socket-set screws (SSS) sizes 0.060 through 1.000 in. square head set screws (SHSS) sizes 0.190 through 1.500 in., and slotted headless set screws (HSS) 0.060 through 0.750 in., in two conditions, AF and CW.
ASME B18.3 Covers the complete general and dimensional data for various types of hexagon socket cap screws, shoulder screws, set screws, and hexagon keys recognized as an American National Standard.
ASME B1.1 UNC & UNF Class 2A Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.

Socket Set Screw Head Marking
Stainless Steel Socket Set Screw requires no material marking

Mechanical PropertiesStainless Steel Socket Set Screw

Per ASTM F880-12
Austenitic Grade
Stainless Steel
Rockwell
Hardness Limits
Vickers
Hardness Limits
Condition AF 70 to 95 HRB 125 to 210 DPH
Condition CW 96 HRB to 33 HRC 216 to 327 DPH

Chemical PropertiesStainless Steel Socket Set Screw

Per ASTM F880-12
Material Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Copper
% by weight % by weight % by weight % by weight % by weight % by weight % by weight % by weight
UNS S30400 0.08 2.00 0.045 0.030 1.00 18.0 to 20.0 8.0 to 10.5 1.00
  1. Composition, % maximum except as shown.

Dimensional SpecificationsStainless Steel Socket Set Screw

Socket Set Screw dimensions
Per ASME B18.3-2012
Size Nominal UNC UNF J T C Oval Point
Radius
Cone Point
Angles
Hex Socket Size Key
Engagement
Cup & Flat Point
Diameters
Fraction
Nominal
Decimal
Nominal
Min Max Min Basic 90 Deg
Lengths
#0 0.0600   80 …. 0.0280 0.0500 0.0330 0.0270 0.0450 0.0900
#1 0.0730 64 72 …. 0.0350 0.0600 0.0400 0.0330 0.0550 0.0900
#2 0.0860 56 64 …. 0.0350 0.0600 0.0470 0.0390 0.0640 0.1300
#3 0.0990 48 56 …. 0.0500 0.0700 0.0540 0.0445 0.0740 0.1300
#4 0.1120 40 48 …. 0.0500 0.0700 0.0610 0.0510 0.0840 0.1900
#5 0.1250 40 44 1/8 0.0620 0.0800 0.0670 0.0570 0.0940 0.1900
#6 0.1380 32 40 1/8 0.0620 0.0800 0.0740 0.0640 0.1040 0.1900
#8 0.1640 32 36 5/64 0.0780 0.0900 0.0870 0.0760 0.1230 0.2500
#10 0.1900 24 32 3/32 0.0940 0.1000 0.1020 0.0880 0.1420 0.2500
1/4 0.2500 20 28 1/8 0.1250 0.1250 0.1320 0.0118 0.1880 0.3100
5/16 0.3125 18 24 5/32 0.1560 0.1560 0.1720 0.1560 0.2340 0.3800
3/8 0.3750 16 24 3/16 0.1880 0.1880 0.2120 0.1940 0.2810 0.4400
7/16 0.4375 14 20 7/32 0.2190 0.2190 0.2520 0.2320 0.3280 0.5000
1/2 0.5000 13 20 1/4 0.2500 0.2500 0.2910 0.2700 0.3750 0.5700
5/8 0.6250 11 18 5/16 0.3120 0.3120 0.3710 0.3470 0.4690 0.7500
3/4 0.7500 10 16 3/8 0.3750 0.3750 0.4500 0.4250 0.5620 0.8800
7/8 0.8750 9 14 1/2 0.5000 0.5000 0.5300 0.5020 0.6560 1.0000
1 1.0000 8 14 9/16 0.5620 0.5620 0.6090 0.5790 0.7500 1.1300
1 1/8 1.1250 7 12 9/16 0.5620 0.5620 0.6890 0.6550 0.8440 1.2500
1 1/4 1.2500 7 12 5/8 0.6250 0.6250 0.7670 0.7330 0.9380 1.5000
1 3/8 1.3750 7 12 5/8 0.6250 0.6250 0.8480 0.8080 1.0310 1.6300
1 1/2 1.5000 6 12 3/4 0.7500 0.7500 0.9260 0.8860 1.1250 1.7500
1 3/4 1.7500 5 12 1 1.0000 1.0000 1.0890 1.0390 1.3120 2.0000
2 2.0000 4 12 1 1.0000 1.0000 1.2440 1.1930 1.5000 2.2500
  1. All dimensions are in inches.
18-8 SS Socket Set Screw
View
Diameter Thread Pitch Length Item # Availability Price Quantity UOM
#4 40 3/16 SSSS4400018 In Stock $0.16019/EA EA
#4 40 1/4 SSSS4400025 In Stock $0.05899/EA EA
#4 40 1/2 SSSS4400050 In Stock $0.08406/EA EA
#6 32 3/16 SSSS6320018 In Stock $0.02403/EA EA
#6 32 1/4 SSSS6320025 In Stock $0.0801/EA EA
#6 32 5/16 SSSS6320031 In Stock $0.12014/EA EA
#6 32 3/8 SSSS6320037 In Stock $0.0801/EA EA
#6 32 1/2 SSSS6320050 In Stock $0.12014/EA EA
#6 32 3/4 SSSS6320075 In Stock $0.24029/EA EA
#8 32 3/16 SSSS8320018 In Stock $0.20024/EA EA
#8 32 1/4 SSSS8320025 In Stock $0.07441/EA EA
#8 32 5/16 SSSS8320031 In Stock $0.02803/EA EA
#8 32 3/8 SSSS8320037 In Stock $0.0801/EA EA
#8 32 1/2 SSSS8320050 In Stock $0.07745/EA EA
#8 32 3/4 SSSS8320075 In Stock $0.12014/EA EA
#8 32 1 SSSS8320100 In Stock $0.20024/EA EA
#10 24 3/16 SSSS1020018 In Stock $0.1535/EA EA
#10 24 1/4 SSSS1020025 In Stock $0.0541/EA EA
#10 24 5/16 SSSS1020031 In Stock $0.03604/EA EA
#10 24 3/8 SSSS1020037 In Stock $0.0801/EA EA
#10 24 1/2 SSSS1020050 In Stock $0.08815/EA EA
#10 24 5/8 SSSS1020062 In Stock $0.20024/EA EA
#10 24 3/4 SSSS1020075 In Stock $0.10012/EA EA
#10 24 1 SSSS1020100 In Stock $0.24029/EA EA
#10 32 3/16 SSSS1030018 In Stock $0.05819/EA EA
#10 32 1/4 SSSS1030025 In Stock $0.0851/EA EA
#10 32 5/16 SSSS1030031 In Stock $0.0801/EA EA
#10 32 5/8 SSSS1030062 In Stock $0.06804/EA EA
#10 32 3/4 SSSS1030075 In Stock $0.14289/EA EA
1/4 20 3/16 SSSS0250018 In Stock $0.96115/EA EA
1/4 20 1/4 SSSS0250025 In Stock $0.06808/EA EA
1/4 20 5/16 SSSS0250031 In Stock $0.08118/EA EA
1/4 20 3/8 SSSS0250037 In Stock $0.12948/EA EA
1/4 20 1/2 SSSS0250050 In Stock $0.0199/EA EA
1/4 20 5/8 SSSS0250062 In Stock $0.12014/EA EA
1/4 20 3/4 SSSS0250075 In Stock $0.15182/EA EA
1/4 20 1 SSSS0250100 In Stock $0.24269/EA EA
1/4 28 3/8 SSSS0250037NF In Stock $0.12014/EA EA
1/4 28 1/2 SSSS0250050NF In Stock $0.13068/EA EA
1/4 28 3/4 SSSS0250075NF In Stock $0.15775/EA EA
5/16 18 1/4 SSSS0310025 In Stock $0.44814/EA EA
5/16 18 5/16 SSSS0310031 In Stock $0.12095/EA EA
5/16 18 3/8 SSSS0310037 In Stock $0.12299/EA EA
5/16 18 1/2 SSSS0310050 In Stock $0.15234/EA EA
5/16 18 3/4 SSSS0310075 In Stock $0.24349/EA EA
5/16 18 1 SSSS0310100 In Stock $0.2475/EA EA
5/16 24 1 SSSS0310100NF In Stock $0.25214/EA EA
3/8 16 1/4 SSSS0370025 In Stock $0.16155/EA EA
3/8 16 3/8 SSSS0370037 In Stock $0.12667/EA EA
3/8 16 1/2 SSSS0370050 In Stock $0.21157/EA EA
3/8 16 3/4 SSSS0370075 In Stock $0.59788/EA EA
3/8 16 1 SSSS0370100 In Stock $0.34101/EA EA
3/8 24 3/8 SSSS0370037NF In Stock $0.1662/EA EA
1/2 13 3/8 SSSS0500037 In Stock $0.60072/EA EA
1/2 13 1/2 SSSS0500050 In Stock $0.26239/EA EA
1/2 13 3/4 SSSS0500075 In Stock $0.96616/EA EA
1/2 13 1 SSSS0500100 In Stock $1.25394/EA EA
1/2 13 1 1/4 SSSS0500125 In Stock $1.7159/EA EA
1/2 13 1 1/2 SSSS0500150 In Stock $1.21914/EA EA
1/2 13 2 1/2 SSSS0500250 In Stock $3.94942/EA EA
5/8 11 1/2 SSSS0620050 In Stock $1.86624/EA EA
5/8 11 5/8 SSSS0620062 In Stock $1.36163/EA EA
5/8 11 1 SSSS0620100 In Stock $2.79119/EA EA
5/8 11 1 1/4 SSSS0620125 In Stock $1.80216/EA EA
5/8 11 2 SSSS0620200 In Stock $4.66159/EA EA