The Thumbscrew, cataloged under National Stock Number 5305-01-144-7666, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-144-7666 |
| Primary Part Number | D7500-10A2 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.290 INCHES NOMINAL IN |
| Fastener Length | 0.707 INCHES NOMINAL IN |
| Shoulder Length | 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.250 INCHES MINIMUM AND 0.297 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.080 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | QQ-S-631 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.257 INCHES IN |
| Head Style | KNURLED NO. 2 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.451 INCHES NOMINAL IN |
| 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 |
|---|---|
| D7500-10A2 | Huck International, Inc. Div Huck Products Division (USA) |
| D7500-10A2 PRIMARY | Huck International, Inc (USA) |
| D7500-10A2 | Orbital Parts Inc (USA) |
| Reference | Meaning |
|---|---|
| D7500-10A2 | 5/9 Secondary reference U.S. Government activity |
| D7500-1A2 | 5/9 Secondary reference Huck International, Inc. Div Huck Products Division |
NSN 5305-01-144-7666 is a Thumbscrew, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-144-7666 has 3 manufacturer part numbers on file: D7500-10A2 (Huck International, Inc. Div Huck Products Division), D7500-10A2 (Huck International, Inc), D7500-10A2 (Orbital Parts Inc).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-251-1623. Verify interchangeability with system specifications before substitution.
Key specifications for D7500-10A2: Head Height: 0.290 INCHES NOMINAL IN; Fastener Length: 0.707 INCHES NOMINAL IN; Shoulder Length: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.250 INCHES MINIMUM AND 0.297 INCHES MAXIMUM FIRST SHOULDER IN. 16 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.