The Washer,spring Tension, cataloged under National Stock Number 5310-01-309-3748, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-309-3748 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Style Designator | SPRING TENSION |
| Material Document and Classification | AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.465 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 0.244 INCHES MINIMUM AND 0.251 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 |
| Reference | Meaning |
|---|---|
| ES8420-01 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| SAM126205 | 3/9 Design control — primary reference Rolex Company Dba Rolex Company Div Rolex Company |
| ES8420-01 | 7/9 Vendor item drawing reference Drs Sustainment Systems, Inc. |
| SAM126205 | C/1 Advisory reference — outside the item-of-supply concept Matthew Warren, Inc. Div Maryland Precision Spring |
NSN 5310-01-309-3748 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-309-3748: Overall Height: 0.032 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Style Designator: SPRING TENSION. 9 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.