Stronghold Screw Products · NSN 5310-00-209-1521 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-1521 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-1521. Primary manufacturer part number: 6431.
5310-00-209-1521 — No Item Name Available illustration
Features
Washer,lock — FSC 5310
Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style Designator: SPLIT HELICAL-RIGHT HAND
Surface Treatment: CADMIUM OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.573 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN
Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 MIL STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness: 0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
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 5310-00-209-1521, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stronghold Screw Products. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-209-1521
Primary Part Number
6431
Item Name
Washer,lock
FSC / FSG
5310 / 53 — No Item Name Available
Manufacturer
Stronghold Screw Products
Status
ACTIVE
Hardness Rating
45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style Designator
SPLIT HELICAL-RIGHT HAND
Surface Treatment
CADMIUM OVERALL
Material
STEEL OVERALL
Hole Diameter
0.573 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN
Material Document and Classification
FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 MIL STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness
0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
Outside Diameter
0.975 INCHES NOMINAL IN
Surface Treatment Document and Classification
QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN 5310-00-209-1521 is a Washer,lock, manufactured by Stronghold Screw Products, classified under FSC 5310 (No Item Name Available). Status: active.
What are the part numbers for NSN 5310-00-209-1521?
NSN 5310-00-209-1521 has 2 cross-referenced part numbers: 6431 (Stronghold Screw Products), MS35337-49 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
What NSN replaces 5310-00-209-1521?
There are 12 known substitutes for 5310-00-209-1521: 6680-00-085-7589, 5950-00-137-4728, 3110-00-156-5451 and 9 more. Verify interchangeability with system specifications before substitution.
What are the specifications of 6431?
Key specifications for 6431: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Surface Treatment: CADMIUM OVERALL; Material: STEEL OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.
✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.