The Washer,saddle, cataloged under National Stock Number 5310-01-381-2040, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-381-2040 |
| Primary Part Number | 1137AS724 |
| Item Name | Washer,saddle |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.094 INCHES NOMINAL IN |
| Style Designator | SADDLE |
| Material Document and Classification | QQ-P-768 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Color | YELLOW OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.137 INCHES MINIMUM AND 0.143 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 |
|---|---|
| 1137AS724 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| D4-140 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-381-2040 is a Washer,saddle, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-381-2040 has 1 manufacturer part number on file: 1137AS724 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1137AS724: Overall Height: 0.094 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.094 INCHES NOMINAL IN; Style Designator: SADDLE. 8 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.