PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

904187Washer,lock

Scandinavian Manufacturing Scama Ab · NSN 5310-01-336-6379 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-336-6379 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-336-6379. Primary manufacturer part number: 904187.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material Thickness: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
  • Departure From Cited Document: AS MODIFIED BY ZINC
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Outside Diameter: 1.079 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-336-6379, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Scandinavian Manufacturing Scama Ab. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-336-6379
Primary Part Number904187
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerScandinavian Manufacturing Scama Ab
StatusACTIVE
Hole Diameter0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Material Thickness0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Departure From Cited DocumentAS MODIFIED BY ZINC
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter1.079 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentZINC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-004-5034004-003005-059 INTERCHANGEABLE
Washer,lock
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5310-00-232-8194 INTERCHANGEABLE
Washer,lock
5310-00-820-6653MS35338-50 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
904187 Scandinavian Manufacturing Scama Ab (SWE)
MS35338-50 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS35338-50 Aero Defence Pty Ltd (AUS)
Related Parts
5310-00-004-5034INTERCHANGEABLE
WASHER,LOCK
004-003005-059
5310-00-232-8194INTERCHANGEABLE
WASHER,LOCK
5310-00-820-6653INTERCHANGEABLE
WASHER,LOCK
MS35338-50

Frequently Asked Questions

What is NSN 5310-01-336-6379?

NSN 5310-01-336-6379 is a Washer,lock, manufactured by Scandinavian Manufacturing Scama Ab, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-336-6379?

NSN 5310-01-336-6379 has 3 cross-referenced part numbers: 904187 (Scandinavian Manufacturing Scama Ab), MS35338-50 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS35338-50 (Aero Defence Pty Ltd).

What NSN replaces 5310-01-336-6379?

There are 3 known substitutes for 5310-01-336-6379: 5310-00-004-5034, 5310-00-232-8194, 5310-00-820-6653. Verify interchangeability with system specifications before substitution.

What are the specifications of 904187?

Key specifications for 904187: Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Material Thickness: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN; Departure From Cited Document: AS MODIFIED BY ZINC. 9 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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