The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-021-8408, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 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 | 5310-00-021-8408 |
| Primary Part Number | 218408 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 12 |
| Nut Height | 1.063 INCHES NOMINAL IN |
| Nominal Thread Size | 1.250 INCHES IN |
| Bearing Surface Type | WASHER FACED |
| Thread Series | UNF |
| Width Across Flats | 1.875 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Material | STEEL OVERALL |
| Departure From Cited Document | AS MODIFIED BY NUT HEIGHT |
| Nondefinitive Spec/std Data | A TYPE |
| Material Document and Classification | QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| N38311 | Diamond Reo Truck Co (USA) |
| 906405 | Allis-Chalmers Corp (USA) |
| 0906405-6 | Allis-Chalmers Corp (USA) |
| 218408 | International Harvester Co Agricultural Equipment Div (USA) |
| FFB571TYPEA | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 218408 | General Motors Llc Dba General Motors Llc (USA) |
| 0906405 | Allis-Chalmers Corp (USA) |
| 218408 | General Motors Corp (USA) |
| 218408 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6X3-1-1-4 | Kaitlin Corp (USA) |
| 41F20 | Corbitt Co Inc (USA) |
NSN 5310-00-021-8408 is a Nut,plain,hexagon, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-021-8408 has 11 cross-referenced part numbers: N38311 (Diamond Reo Truck Co), 906405 (Allis-Chalmers Corp), 0906405-6 (Allis-Chalmers Corp), 218408 (International Harvester Co Agricultural Equipment Div), FFB571TYPEA (Federal Specifications Promulgated by General Services Administration Washington DC) and 6 more.
There are 3 known substitutes for 5310-00-021-8408: 5305-00-239-3827, 4610-01-333-4949, 2540-01-497-9053. Verify interchangeability with system specifications before substitution.
Key specifications for 218408: Thread Direction: RIGHT-HAND; Thread Quantity Per Inch: 12; Nut Height: 1.063 INCHES NOMINAL IN; Nominal Thread Size: 1.250 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.