The Screw,close Tolerance, cataloged under National Stock Number 5305-01-259-1191, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-259-1191 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 125.0 MICROINCHES TOP OF HEAD |
| Surface Finish | 125.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Surface Finish | 125.0 MICROINCHES SIDES OF HEAD |
| Head Height | 0.060 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Fastener Length | 1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.238 INCHES NOMINAL IN |
| Supplementary Features | TRI-WING RECESS NO. NAS4000-2 |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5000,G43606 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000,G43400 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE OR SAE J404,G87400 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS5000 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 3 CLASS AND B TYPE AND 3 TABLE AND 0.112-40 SIZE |
| Grip Diameter | 0.110 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | TRI-WING RECESS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.206 INCHES MINIMUM AND 0.210 INCHES MAXIMUM 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 |
|---|---|
| NAS5000-22 | 3/2 Design control — primary reference U.S. Government activity |
| NAS4002 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-01-259-1191 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-259-1191: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 125.0 MICROINCHES TOP OF HEAD; Surface Finish: 125.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD. 27 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.