The Washer,spring Tension, cataloged under National Stock Number 5310-01-256-5238, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-256-5238 |
| Primary Part Number | 3223AS729-1 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Material Document and Classification | AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN |
| Material Thickness | 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 0.750 INCHES MINIMUM AND 0.760 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 |
|---|---|
| 3223AS729-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| B1500-072S | 3/2 Design control — primary reference U.S. Government activity |
| 5054383-1 | 5/9 Secondary reference Signals Warfare Project Manager |
| 5166340 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5310-01-256-5238 is a Washer,spring Tension, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-256-5238 has 1 manufacturer part number on file: 3223AS729-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 3223AS729-1: Overall Height: 0.102 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN; Style Designator: SPRING TENSION; Material Document and Classification: AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN. 6 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.