The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-121-1666, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Eastern Gear Corporation. Government technical data includes 9 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 | 5305-01-121-1666 |
| Primary Part Number | 6477-34 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Eastern Gear Corporation |
| Status | ACTIVE |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Thread Length | 2.167 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 6477-34 PRIMARY | Eastern Gear Corporation (USA) |
NSN 5305-01-121-1666 is a Screw,cap,hexagon Head, manufactured by Eastern Gear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-1666 has 1 manufacturer part number on file: 6477-34 (Eastern Gear Corporation).
Key specifications for 6477-34: Fastener Length: 2.250 INCHES NOMINAL IN; Thread Length: 2.167 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN; Head Style: DOUBLE HEXAGON. 9 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.