The Screw,close Tolerance, cataloged under National Stock Number 5305-01-014-1419, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 21 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-014-1419 |
| Primary Part Number | SS5112-539 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.157 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 2.915 INCHES MINIMUM AND 2.935 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.305 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | CROWNED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.438 INCHES MINIMUM AND 2.454 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.813 INCHES MINIMUM AND 2.829 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| SS5112-539 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| SS5112-539 | 5/2 Secondary reference U.S. Government activity |
| NASM3369 | 3/1 Design control — primary reference U.S. Government activity |
| AS169-5-39 | 5/2 Secondary reference U.S. Government activity |
| CA2658-5-39 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
| MS3369B539 | 5/9 Secondary reference U.S. Government activity |
| MS3369B539 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-014-1419 is a Screw,close Tolerance, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-014-1419 has 1 manufacturer part number on file: SS5112-539 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
4 possible matches (shared part number, not a government interchangeability claim): 5305-01-043-1370, 5305-01-160-0336, 5305-01-160-3957. Verify interchangeability with system specifications before substitution.
Key specifications for SS5112-539: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.157 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 2.915 INCHES MINIMUM AND 2.935 INCHES MAXIMUM IN. 21 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.