The Thumbscrew, cataloged under National Stock Number 5305-01-451-2800, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Accurate Screw Machine Corp Div Accurate Screw Machine Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-451-2800 |
| Primary Part Number | 114121-2.25SS-RBL-12 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Head Height | 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Fastener Length | 2.210 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Thread Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | STAR KNOB |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.480 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 114121-2.25SS-RBL-12 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
| Reference | Meaning |
|---|---|
| 12981723 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
NSN 5305-01-451-2800 is a Thumbscrew, manufactured by Accurate Screw Machine Corp Div Accurate Screw Machine Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-451-2800 has 1 manufacturer part number on file: 114121-2.25SS-RBL-12 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 114121-2.25SS-RBL-12: Head Height: 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Fastener Length: 2.210 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN; Thread Length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 11 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.