The Thumbscrew, cataloged under National Stock Number 5305-01-138-3280, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-138-3280 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-Z-325 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Thread Length | 0.900 INCHES MINIMUM IN |
| Criticality Code Justification | ZZZY |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | THUMB NO. 3 |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Reference Number Differentiating Characteristics | REFERENCE NUMBER DIFFERENTIATING MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS AVAILABLE AT THE DLA ICP. FEAT - ITEM MUST COMPLY WITH REQUIREMENTS OF DEFENSE SUPPLY CENTER COLUMBUS PRODUCTION STANDARD NO. LO-011383280. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| LO-011383280 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 11-4538 | 3/1 Design control — primary reference Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
NSN 5305-01-138-3280 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-138-3280: Fastener Length: 1.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Special Test Features: SPECIAL QUALITY CONTROL TESTING; Thread Length: 0.900 INCHES MINIMUM IN. 15 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.