The Washer,spring Tension, cataloged under National Stock Number 5310-01-031-5412, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-031-5412 |
| Primary Part Number | U375-0160 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-S-171,TYPE B MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | QQ-S-777 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.735 INCHES NOMINAL IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Material | STEEL COMP 1075 OVERALL |
| Hole Diameter | 0.395 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 |
| Part Number | Manufacturer |
|---|---|
| 2134690-1 | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| 1857254-4 | Northrop Grumman Systems Corporation (USA) |
| U375-0160 PRIMARY | Barnes Group Inc (USA) |
| Reference | Meaning |
|---|---|
| 2134690-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| U375-0160 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-031-5412 is a Washer,spring Tension, manufactured by Barnes Group Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-031-5412 has 3 manufacturer part numbers on file: 2134690-1 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div), 1857254-4 (Northrop Grumman Systems Corporation), U375-0160 (Barnes Group Inc).
Key specifications for U375-0160: Overall Height: 0.086 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-S-171,TYPE B MIL STD SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM; Material Document and Classification: QQ-S-777 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.