The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-044-3011, 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 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-3011 |
| Primary Part Number | AIC752-5D17 |
| 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 | 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Head Height | 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Fastener Length | 1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Thread Length | 0.526 INCHES MINIMUM AND 0.576 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-571 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | 1.390 INCHES MINIMUM AND 1.430 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 |
|---|---|
| AIC752-5D17 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3060-5D17 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M571-5D17 | Heartland Precision Fasteners Inc (USA) |
| S11-1059-5D17 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB84-5D17 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB84-5D17 PRIMARY | Hi-Shear Corporation (USA) |
| VAL23033-5D17 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M571-5D17 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M571-5D17 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M571-5D17 | The Boeing Company Div Defense (USA) |
| GS1030-5D17 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| BM3326-5D17 PRIMARY | Huck International, Inc (USA) |
| ST3M571-5D17 | J M Precision Inc (USA) |
| Reference | Meaning |
|---|---|
| BM3326-5D17 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-5D17 | 5/2 Secondary reference U.S. Government activity |
| VS3060-5D17 | 5/9 Secondary reference U.S. Government activity |
| 74328-5D17 | 3/2 Design control — primary reference U.S. Government activity |
| 74328-5D17 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| S371-5D17 | 5/9 Secondary reference U.S. Government activity |
| PBF23T-5PD17 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| S371-5D17 | 5/9 Secondary reference Huck International, Inc |
NSN 5306-01-044-3011 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 5306-01-044-3011 has 13 manufacturer part numbers on file: AIC752-5D17 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VS3060-5D17 (Howmet Global Fastening Systems Inc), ST3M571-5D17 (Heartland Precision Fasteners Inc), S11-1059-5D17 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), MB84-5D17 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 8 more.
Key specifications for AIC752-5D17: Extended Washer Thickness: 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Head Height: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN; Fastener Length: 1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN; Extended Washer Diameter: 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM 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.