The Washer,concave, cataloged under National Stock Number 5310-01-646-0103, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-646-0103 |
| Primary Part Number | K39787-3 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Hole Diameter | 0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN |
| Outside Diameter | 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Radius | 0.218 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Material Thickness | 0.062 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN |
| Recess Depth | 0.041 INCHES NOMINAL IN |
| Style Designator | CONCAVE |
| Material | STEEL OVERALL |
| Material Document and Classification | AMS6358 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| LE153-0002-0003 | Howmet Global Fastening Systems Inc (USA) |
| LE153-0002-0003 | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| LE153-0002-0003 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| LE153-0002-0003 | The Boeing Company Div Legacy Am&m (USA) |
| K39787-3 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 9488-0 | Esna, Llc (USA) |
NSN 5310-01-646-0103 is a Washer,concave, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-646-0103 has 6 cross-referenced part numbers: LE153-0002-0003 (Howmet Global Fastening Systems Inc), LE153-0002-0003 (Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana), LE153-0002-0003 (Sps Technologies, Llc Dba PB Fasteners), LE153-0002-0003 (The Boeing Company Div Legacy Am&m), K39787-3 (Howmet Global Fastening Systems Inc) and 1 more.
There are 3 known substitutes for 5310-01-646-0103: 1270-00-041-0867, 2240-00-367-4088, 4730-01-017-4816. Verify interchangeability with system specifications before substitution.
Key specifications for K39787-3: Hole Diameter: 0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN; Outside Diameter: 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN; End Item Identification: B1-BACFT; Radius: 0.218 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN. 9 total characteristics are documented in the Federal Logistics Information System.