The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-033-8158, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-033-8158 |
| Primary Part Number | 02-15740 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Height | 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED |
| Material Document and Classification | QQ-A-225/6 TEMPER T351 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.335 INCHES MINIMUM AND 1.345 INCHES MAXIMUM IN |
| Material Thickness | 0.179 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.231 INCHES MINIMUM AND 1.241 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 1.125 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN |
| Recess Angle | 43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 02-15740 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 02-15740 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-033-8158 is a Washer,shouldered and Recessed, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-033-8158 has 1 manufacturer part number on file: 02-15740 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 02-15740: Surface Treatment Document and Classification: MIL-A-8625,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN; Style Designator: SHOULDERED AND RECESSED; Material Document and Classification: QQ-A-225/6 TEMPER T351 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.