The Washer,spring Tension, cataloged under National Stock Number 5310-00-281-2523, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-281-2523 |
| Primary Part Number | 43W7508-4550 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | ASTM B152,H14 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN |
| Material Thickness | 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | H14 TEMPER |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | COPPER ALLOY 122 OR COPPER ALLOY 142 OVERALL |
| Hole Diameter | 0.516 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K7115884 | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| 43W7508-4550 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 654071 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5310-00-281-2523 is a Washer,spring Tension, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-281-2523 has 3 manufacturer part numbers on file: K7115884 (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp), 43W7508-4550 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 654071 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-307-9625. Verify interchangeability with system specifications before substitution.
Key specifications for 43W7508-4550: Overall Height: 0.099 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: ASTM B152,H14 ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.