The Washer,spring Tension, cataloged under National Stock Number 5310-01-258-4637, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-258-4637 |
| Primary Part Number | D6-6 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Outside Diameter | 0.850 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN |
| Material Thickness | 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.645 INCHES MINIMUM AND 0.655 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 |
|---|---|
| D6-6 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| Reference | Meaning |
|---|---|
| 5189734-001 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5310-01-258-4637 is a Washer,spring Tension, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-258-4637 has 1 manufacturer part number on file: D6-6 (Roller Bearing Co of America, Inc Div Pic Design).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-548-8727. Verify interchangeability with system specifications before substitution.
Key specifications for D6-6: Overall Height: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Outside Diameter: 0.850 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN; Material Thickness: 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN; Material: STEEL COMP 302 OVERALL. 4 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.