The Washer,spring Tension, cataloged under National Stock Number 5310-01-073-9225, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hornet Acquisitionco, Llc Dba Onboard Systems. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-073-9225 |
| Primary Part Number | 42277-349 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hornet Acquisitionco, Llc Dba Onboard Systems |
| Status | ACTIVE |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM45.0 ROCKWELL C MAXIMUM |
| Style Designator | SPRING TENSION |
| Material Document and Classification | MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN |
| Material | STEEL COMP 1095 OVERALL |
| Hole Diameter | 1.030 INCHES NOMINAL1.030 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 |
|---|---|
| 42277-349 PRIMARY | Hornet Acquisitionco, Llc Dba Onboard Systems (USA) |
| Reference | Meaning |
|---|---|
| 42277-349 | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
NSN 5310-01-073-9225 is a Washer,spring Tension, manufactured by Hornet Acquisitionco, Llc Dba Onboard Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-073-9225 has 1 manufacturer part number on file: 42277-349 (Hornet Acquisitionco, Llc Dba Onboard Systems).
Key specifications for 42277-349: Overall Height: 0.095 INCHES MINIMUM AND 0.095 INCHES MINIMUM AND 0.110 INCHES MAXIMUM0.110 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM45.0 ROCKWELL C MAXIMUM; Style Designator: SPRING TENSION; Material Document and Classification: MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 7 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.