The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-240-4028, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-240-4028 |
| Primary Part Number | AIC596-3-12 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 1.058 INCHES MINIMUM AND 1.088 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.298 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.383 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| C7521-3-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3133-3-12 | Howmet Global Fastening Systems Inc (USA) |
| AIC596-3-12 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| H411-3-12 | Huck International, Inc (USA) |
| VCG0009-3-12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| C7521-3-12 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| C7521-3-12 | 5/2 Secondary reference U.S. Government activity |
| 5306PL1498563 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C7521-3-12 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5306PL1803011 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| VS3133-3-12 | 5/9 Secondary reference U.S. Government activity |
| 120978-3-12 | 5/9 Secondary reference U.S. Government activity |
| H411-3-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-240-4028 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-240-4028 has 6 manufacturer part numbers on file: C7521-3-12 (Sps Technologies, Llc Dba PB Fasteners), VS3133-3-12 (Howmet Global Fastening Systems Inc), AIC596-3-12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), H411-3-12 (Huck International, Inc), VCG0009-3-12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 1 more.
Key specifications for AIC596-3-12: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.140 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.