The Screw,close Tolerance, cataloged under National Stock Number 5305-01-520-9386, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-520-9386 |
| Primary Part Number | NAS5314V3A6 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.127 INCHES NOMINAL IN |
| Fastener Length | 0.778 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | NAS4006 ASSN STD 1ST TREATMENT RESPONSE AND CETYL ALCOHOL LUBRICANT PER MIL-L-87132, TYPE 3, GRADE B MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.260 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4928 FED SPEC 1ST MATERIAL RESPONSE OR AMS 4967 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.155 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | UNDERCUT PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.375 INCHES NOMINAL IN |
| Grip Diameter | 0.189 INCHES NOMINAL IN |
| Surface Treatment | PAINT AND LUBRICANT OVERALL |
| Minimum Tensile Strength | 3180 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORX |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.547 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 |
|---|---|
| NAS5314V3A6 | Heartland Precision Fasteners Inc (USA) |
| NAS5314V3A6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NAS5314V3A6 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| NAS5314V3A6 | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (USA) |
| NAS5314V3A6 | Howmet Global Fastening Systems Inc (USA) |
| NAS5314V3A6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| NAS5314V3A6 | B & B Specialties Inc (USA) |
| NAS5314V3A6 | Saturn Fasteners Inc (USA) |
| NAS5314V3A6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| NAS5314V346 | 5/9 Secondary reference U.S. Government activity |
| 120-259V3A6 | 5/9 Secondary reference U.S. Government activity |
| NAS5314V3A6 | 5/9 Secondary reference U.S. Government activity |
| NAS5314V3A6 | 5/2 Secondary reference U.S. Government activity |
| NAS5314V3A6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-520-9386 is a Screw,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-520-9386 has 9 manufacturer part numbers on file: NAS5314V3A6 (Heartland Precision Fasteners Inc), NAS5314V3A6 (Sps Technologies, Llc Dba PB Fasteners), NAS5314V3A6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), NAS5314V3A6 (Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona), NAS5314V3A6 (Howmet Global Fastening Systems Inc) and 4 more.
Key specifications for NAS5314V3A6: Head Height: 0.127 INCHES NOMINAL IN; Fastener Length: 0.778 INCHES NOMINAL IN; Surface Treatment Document and Classification: NAS4006 ASSN STD 1ST TREATMENT RESPONSE AND CETYL ALCOHOL LUBRICANT PER MIL-L-87132, TYPE 3, GRADE B MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 0.260 INCHES NOMINAL IN. 19 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.