The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-021-8550, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Services, Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-021-8550 |
| Primary Part Number | 218550 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Lockheed Martin Services, Llc |
| Status | CANCELLED |
| Thread Quantity Per Inch | 48 |
| Nominal Thread Size | 0.099 INCHES IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Bearing Surface Type | FLAT |
| Nondefinitive Spec/std Data | C GROUP AND 2 TYPE AND 1 STYLE AND A GRADE |
| Material | STEEL OVERALL |
| Nut Height | 0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Width Across Flats | 0.1800 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2B |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 218550 | Lockheed Martin Services, Llc (USA) |
| FFN836GPCTYPE2STYLE1GRADEA | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 218550 | General Motors Corp (USA) |
| 218550 | General Motors Llc Dba General Motors Llc (USA) |
| 218550 | Lockheed Martin Aeronautical Systems Support Company Dba Lmassc (USA) |
| 218550 | Army Weapons Command Attn Amswe-Ree-S (USA) |
NSN 5310-00-021-8550 is a Nut,plain,hexagon, manufactured by Lockheed Martin Services, Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-00-021-8550 has 6 cross-referenced part numbers: 218550 (Lockheed Martin Services, Llc), FFN836GPCTYPE2STYLE1GRADEA (Federal Specifications Promulgated by General Services Administration Washington DC), 218550 (General Motors Corp), 218550 (General Motors Llc Dba General Motors Llc), 218550 (Lockheed Martin Aeronautical Systems Support Company Dba Lmassc) and 1 more.
There are 12 known substitutes for 5310-00-021-8550: 5310-00-010-3089, 5310-00-011-0921, 5310-00-011-0922 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 218550: Thread Quantity Per Inch: 48; Nominal Thread Size: 0.099 INCHES IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Bearing Surface Type: FLAT. 11 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-021-8550 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.