The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-252-0620, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-252-0620 |
| Primary Part Number | 1395AS157 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Shoulder Height | 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED |
| Material Document and Classification | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 1.030 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN |
| Material Thickness | 0.130 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.770 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN |
| Recess Diameter | 0.360 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 4340 OVERALL |
| Hole Diameter | 0.316 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 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 |
|---|---|
| 1395AS157 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5310-01-252-0620 is a Washer,shouldered and Recessed, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-252-0620 has 1 manufacturer part number on file: 1395AS157 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1395AS157: Shoulder Height: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN; Style Designator: SHOULDERED AND RECESSED; Material Document and Classification: ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 1.030 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN. 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.