The Bolt,machine, cataloged under National Stock Number 5306-00-151-1423, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-151-1423 |
| Primary Part Number | AN4-11A |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 1.156 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.468 INCHES MINIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| AN4-11A | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 401 311 | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA) |
| 2010283 | Embraer Aviation International (FRA) |
| AN4-11A | Tecno Trade S.r.l. (ITA) |
| AN4-11A | Interstate Fittings Inc. Div Fastener Division (USA) |
| 932.19.21.130 | Pilatus Aircraft Ltd (CHE) |
| 7601603 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 2010283 | Embraer S.a. (BRA) |
| AN4-11A | Leonardo Uk Ltd (GBR) |
| AN4-11A | Gfc Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 5306PL0963401 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5306PL0809955 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AN4-11A | 3/2 Design control — primary reference U.S. Government activity |
| AN4-11A | 5/9 Secondary reference U.S. Government activity |
| 2010283 | 5/9 Secondary reference Embraer Empresa Brasileira De Aeronautica Sa |
NSN 5306-00-151-1423 is a Bolt,machine, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-151-1423 has 10 manufacturer part numbers on file: AN4-11A (Leonardo Spa Helicopters Division - Production Site), 401 311 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company), 2010283 (Embraer Aviation International), AN4-11A (Tecno Trade S.r.l.), AN4-11A (Interstate Fittings Inc. Div Fastener Division) and 5 more.
1 possible match (shared part number, not a government interchangeability claim): 5940-01-555-9560. Verify interchangeability with system specifications before substitution.
Key specifications for AN4-11A: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 1.156 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Thread Length: 0.468 INCHES MINIMUM IN. 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.