PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

187241Washer,lock

General Motors Corp · NSN 5310-00-018-7241 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-018-7241 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-018-7241. Primary manufacturer part number: 187241.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Outside Diameter: 0.4687 INCHES NOMINAL IN
  • Hole Diameter: 0.254 INCHES MINIMUM AND 0.269 INCHES MAXIMUM IN
  • Material Document and Classification: -QQ-S-633 CANC FED SPEC 1ST MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 2ND MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 3RD MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 4TH MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 5TH MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Material Thickness: 0.072 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1065 or Steel Comp 1070 or Steel Comp 1075 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-018-7241, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-018-7241
Primary Part Number187241
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter0.4687 INCHES NOMINAL IN
Hole Diameter0.254 INCHES MINIMUM AND 0.269 INCHES MAXIMUM IN
Material Document and Classification-QQ-S-633 CANC FED SPEC 1ST MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 2ND MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 3RD MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 4TH MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 5TH MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Material Thickness0.072 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-00-542-1849AS568B212 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
187241 General Motors Corp (USA)
187241 General Motors Llc Dba General Motors Llc (USA)
BECX4G1 CAGE 00000
A262167 CAGE 00000
Related Parts
5331-00-542-1849INTERCHANGEABLE
O-RING
AS568B212

Frequently Asked Questions

What is NSN 5310-00-018-7241?

NSN 5310-00-018-7241 is a Washer,lock, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-018-7241?

NSN 5310-00-018-7241 has 4 cross-referenced part numbers: 187241 (General Motors Corp), 187241 (General Motors Llc Dba General Motors Llc), BECX4G1, A262167.

What NSN replaces 5310-00-018-7241?

There is 1 known substitute for 5310-00-018-7241: 5331-00-542-1849. Verify interchangeability with system specifications before substitution.

What are the specifications of 187241?

Key specifications for 187241: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.4687 INCHES NOMINAL IN; Hole Diameter: 0.254 INCHES MINIMUM AND 0.269 INCHES MAXIMUM IN; Material Document and Classification: -QQ-S-633 CANC FED SPEC 1ST MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 2ND MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 3RD MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 4TH MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 5TH MATERIAL RESPONSE OVERALL. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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