The Washer,spring Tension, cataloged under National Stock Number 5310-01-044-6591, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-044-6591 |
| Primary Part Number | B1000-50 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.9700 INCHES MINIMUM AND 0.9700 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM1.0000 INCHES MAXIMUM IN |
| Material Thickness | 0.0500 INCHES NOMINAL0.0500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.5050 INCHES MINIMUM AND 0.5050 INCHES MINIMUM AND 0.5150 INCHES MAXIMUM0.5150 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 |
|---|---|
| B1000-50 PRIMARY | Barnes Group Inc (USA) |
| Reference | Meaning |
|---|---|
| 12008763 | 7/2 Vendor item drawing reference Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| 12008763 | 5/9 Secondary reference Allied Devices Corp Dba Absolute Precision Co |
| DD627 | 5/9 Secondary reference Allied Devices Corp Dba Absolute Precision Co |
NSN 5310-01-044-6591 is a Washer,spring Tension, manufactured by Barnes Group Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-044-6591 has 1 manufacturer part number on file: B1000-50 (Barnes Group Inc).
Key specifications for B1000-50: Overall Height: 0.0750 INCHES NOMINAL0.0750 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Outside Diameter: 0.9700 INCHES MINIMUM AND 0.9700 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM1.0000 INCHES MAXIMUM IN; Material Thickness: 0.0500 INCHES NOMINAL0.0500 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.