Skip to content
Privacy Policy Return Policy Contact Us
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length
McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length

McMaster 90298A628 18-8 Stainless Steel Shoulder Screw, with Passivated Finish, 3/8" Shoulder Diameter, 1-1/2" Shoulder Length

UPC: | Harmonization / Schedule B : 7318.15.9000

Country of Origin: United States | Shipping Weight: 0.05 lbs

$49.20 - $49.20
$49.20
$49.20 - $49.20
$49.20

These screws hold up against moisture and chemicals better than their steel counterparts, but they aren't as strong.

Check out our Made-to-Order Stainless Steel Hex-Drive Shoulder Screws if you don't see the shoulder length you need.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Shoulder Fit Standard
Thread Direction Right Hand
Socket Head Profile Standard
Fastener Head Type Socket
Drive Style Hex
Material 18-8 Stainless Steel
Shoulder Diameter 3/8"
Shoulder Diameter Tolerance -0.004" to -0.002"
Shoulder Length 1 1/2"
Shoulder Length Tolerance -0.005" to 0.005"
Thread Size 5/16"-18
Thread Length 1/2"
Diameter 9/16"
Height 1/4"
Drive Size 3/16"
Tensile Strength 70,000 psi
Material Certificate Form Digital
Certificate Type Material Certificate with Traceable Lot Number
Hardness Rockwell B55
Head Texture Knurled
Minimum Shear Strength Not Rated
Passivation Passivated
Performance Corrosion Resistant
Relative Thread Length Standard
Relative Thread Size Standard
Screw Size Decimal Equivalent 0.313"
Specifications Met ASME B18.3
System of Measurement Inch
Thread Fit Unified Standard Class 3A
Thread Spacing Coarse
Thread Type UNC
Country of Origin United States
DFARS Compliance Specialty Metals Compliant (252.225-7009)
Export Control Classification Number (ECCN) EAR99
REACH Compliance REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant
RoHS Compliance RoHS 3 (2015/863/EU) Compliant
Schedule B Number 731815.9000
U.S.–Mexico–Canada Agreement (USMCA) Qualifying Yes