The Washer,convex, cataloged under National Stock Number 5310-01-659-0049, 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. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-659-0049 |
| Primary Part Number | LE153-0001-0007 |
| Item Name | Washer,convex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-STD-1500 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.515 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN |
| Style Designator | RECESSED |
| Outside Diameter | 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Material Thickness | 0.160 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Recess Diameter | 0.845 INCHES MINIMUM AND 0.855 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.448 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| Recess Angle | 88.000 DEGREES MINIMUM AND 92.000 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 |
|---|---|
| LE153-0001-0007 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| LE153-0001-0007 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| LE153-0001-0007 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| LE153-0001-0007 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| LE153-0001-0007 | Hi-Shear Corporation (USA) |
| LE153-0001-0007 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| K39781-7 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| LE153-0001-0007 | 5/2 Secondary reference U.S. Government activity |
| LE153-0001-0007 | 7/2 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
| 9487-07 | 3/9 Design control — primary reference Esna, Llc |
| LE153-0001-0007 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| LE153-0001 | D/9 Drawing number reference only The Boeing Company Div Legacy Am&m |
NSN 5310-01-659-0049 is a Washer,convex, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-659-0049 has 6 manufacturer part numbers on file: LE153-0001-0007 (Sps Technologies, Llc Dba PB Fasteners), LE153-0001-0007 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), LE153-0001-0007 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), LE153-0001-0007 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), LE153-0001-0007 (Hi-Shear Corporation) and 1 more.
Key specifications for LE153-0001-0007: Surface Treatment Document and Classification: MIL-STD-1500 MIL STD SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.515 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN; Style Designator: RECESSED; Outside Diameter: 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN. 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.