The Thumbscrew, cataloged under National Stock Number 5305-01-355-0136, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies Integrated Systems L.p. Dba L3harris Technologies. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-355-0136 |
| Primary Part Number | S10253-2 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | L3harris Technologies Integrated Systems L.p. Dba L3harris Technologies |
| Status | ACTIVE |
| Point Diameter | 0.188 INCHES NOMINAL IN |
| Head Height | 0.312 INCHES NOMINAL IN |
| Point Length | 0.281 INCHES NOMINAL IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTMB633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.219 INCHES NOMINAL IN |
| Point Chamfer Angle | 40.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | UNIVERSAL |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1213 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.000 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 |
|---|---|
| S10253-2 PRIMARY | L3harris Technologies Integrated Systems L.p. Dba L3harris Technologies (USA) |
| Reference | Meaning |
|---|---|
| CL-2-SHS-S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-355-0136 is a Thumbscrew, manufactured by L3harris Technologies Integrated Systems L.p. Dba L3harris Technologies, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-355-0136 has 1 manufacturer part number on file: S10253-2 (L3harris Technologies Integrated Systems L.p. Dba L3harris Technologies).
Key specifications for S10253-2: Point Diameter: 0.188 INCHES NOMINAL IN; Head Height: 0.312 INCHES NOMINAL IN; Point Length: 0.281 INCHES NOMINAL IN; Fastener Length: 1.500 INCHES NOMINAL IN. 17 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.