Material Thickness: 0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
Surface Treatment: CADMIUM OVERALL
Material: COPPER ALLOY OVERALL
Hole Diameter: 0.088 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
Identification
NSN: 5310-00-004-4043
NIIN: 000044043
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Washer,lock, cataloged under National Stock Number 5310-00-004-4043, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-004-4043
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Hardness Rating
90.0 ROCKWELL B NOMINAL
Style Designator
SPLIT HELICAL-RIGHT HAND
Outside Diameter
0.165 INCHES MAXIMUM IN
Material Thickness
0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
Surface Treatment
CADMIUM OVERALL
Material
COPPER ALLOY OVERALL
Hole Diameter
0.088 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
N407P3C
3/2Design control — primary reference
U.S. Government activity
N420P3
C/1Advisory reference — outside the item-of-supply concept
Lehigh Armstrong Inc
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-001-5340
5310-00-001-5340 · Item name not on file
5310-00-004-4584
5310-00-004-4584 · Item name not on file
5310-00-004-5157
5310-00-004-5157 · Item name not on file
5310-00-004-7045
5310-00-004-7045 · Item name not on file
5310-00-004-7046
WASHER,RECESSED
5310-00-005-4375
NUT,PLAIN,RECTANGULAR
5310-00-006-8067
5310-00-006-8067 · Item name not on file
5310-00-007-2907
5310-00-007-2907 · Item name not on file
Frequently Asked Questions
What is NSN 5310-00-004-4043?
NSN 5310-00-004-4043 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
What are the specifications of 5310-00-004-4043?
Key specifications for 5310-00-004-4043: Hardness Rating: 90.0 ROCKWELL B NOMINAL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.165 INCHES MAXIMUM IN; Material Thickness: 0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-004-4043 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.