The Washer,spring Tension, cataloged under National Stock Number 5310-01-181-2798, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-181-2798 |
| Primary Part Number | B0187-007-S |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.187 INCHES MAXIMUM IN |
| Material Thickness | 0.0065 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.093 INCHES MINIMUM 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 |
|---|---|
| B0187-007-S PRIMARY | Barnes Group Inc (USA) |
| Reference | Meaning |
|---|---|
| 260180 | 7/2 Vendor item drawing reference Lockheed Martin Corp Electronics and Missiles Div |
| B0187-007-S | 3/2 Design control — primary reference U.S. Government activity |
| B0187-007-S | 5/9 Secondary reference U.S. Government activity |
| B0187-007-S | 5/1 Secondary reference Associated Spring Us, Llc Div Corry |
| 1340DD7091-001 | 7/2 Vendor item drawing reference Bae Systems Information and Electronic Systems Integration Inc. |
NSN 5310-01-181-2798 is a Washer,spring Tension, manufactured by Barnes Group Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-181-2798 has 1 manufacturer part number on file: B0187-007-S (Barnes Group Inc).
1 possible match (shared part number, not a government interchangeability claim): 7025-01-671-5377. Verify interchangeability with system specifications before substitution.
Key specifications for B0187-007-S: Overall Height: 0.013 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Outside Diameter: 0.187 INCHES MAXIMUM IN; Material Thickness: 0.0065 INCHES NOMINAL IN. 5 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.