The Washer,concave, cataloged under National Stock Number 5310-01-648-3489, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 10 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 | 5310-01-648-3489 |
| Primary Part Number | SW1101 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Top Recess Diameter | 1.515 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN |
| Bottom Recess Diameter | 1.340 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN |
| Heat Treatment | ANNEALED |
| Top Recess Angle | 0.060 DEGREES NOMINAL |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.685 INCHES MINIMUM AND 1.695 INCHES MAXIMUM IN |
| Bottom Recess Angle | 0.010 DEGREES NOMINAL |
| Material | TITANIUM ALLOY OVERALL |
| Hole Diameter | 1.005 INCHES MINIMUM AND 1.015 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 |
|---|---|
| SW1101 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
NSN 5310-01-648-3489 is a Washer,concave, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-648-3489 has 1 manufacturer part number on file: SW1101 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for SW1101: Top Recess Diameter: 1.515 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN; Bottom Recess Diameter: 1.340 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN; Heat Treatment: ANNEALED; Top Recess Angle: 0.060 DEGREES NOMINAL. 10 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.