The Washer,spring Tension, cataloged under National Stock Number 5310-00-595-9991, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-595-9991 |
| Primary Part Number | BACW10Q4 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Material Document and Classification | MIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Specification/standard Data | 81205-BACW10Q MANUFACTURERS STANDARD |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.260 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-595-9991 is a Washer,spring Tension, manufactured by Boeing Defence Australia Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-595-9991 has 2 manufacturer part numbers on file: BACW10Q4 (Boeing Defence Australia Ltd), BACW10Q4 (Boeing Defence Australia Ltd Div Defense, Space & Security).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-669-7073. Verify interchangeability with system specifications before substitution.
Key specifications for BACW10Q4: Overall Height: 0.047 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Material Document and Classification: MIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.750 INCHES NOMINAL 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.