The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-591-8806, 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 18 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-591-8806 |
| Primary Part Number | AIC1829-7-44 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.090 INCHES NOMINAL IN |
| Head Height | 0.472 INCHES NOMINAL IN |
| Fastener Length | 3.770 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-8837 TYPE II CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.005 INCHES NOMINAL IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.750 INCHES NOMINAL IN |
| Grip Diameter | 0.687 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 59900 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| MSA20535-7-44 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| 125570-7-44 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC1829-7-44 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C20535-7-44 | Acufast Aircraft Products (USA) |
| Reference | Meaning |
|---|---|
| 125570-7-44 | 5/2 Secondary reference U.S. Government activity |
| C20535-7-44 | 7/2 Vendor item drawing reference U.S. Government activity |
| VS3616-7-44 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-591-8806 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 5306-01-591-8806 has 4 manufacturer part numbers on file: MSA20535-7-44 (M.s. Aerospace Inc. Dba Ms Aerospace Inc), 125570-7-44 (Sps Technologies, Llc Dba PB Fasteners), AIC1829-7-44 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), C20535-7-44 (Acufast Aircraft Products).
Key specifications for AIC1829-7-44: Extended Washer Thickness: 0.090 INCHES NOMINAL IN; Head Height: 0.472 INCHES NOMINAL IN; Fastener Length: 3.770 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-8837 TYPE II CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.