The Thumbscrew, cataloged under National Stock Number 5305-00-899-0515, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-899-0515 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.313 INCHES MINIMUM IN |
| Fastener Length | 4.656 INCHES MINIMUM IN |
| Shoulder Length | 3.281 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.313 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | ANODIZE OR PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | ALUMINUM ALLOY OR STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.000 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B13502G1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 110636801 | 5/9 Secondary reference Momentum Technologies Inc |
| B13502G1 | 3/9 Design control — primary reference Momentum Technologies Inc |
NSN 5305-00-899-0515 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-899-0515: Head Height: 0.313 INCHES MINIMUM IN; Fastener Length: 4.656 INCHES MINIMUM IN; Shoulder Length: 3.281 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.310 INCHES MINIMUM AND 0.312 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.