The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-362-0710, 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 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-362-0710 |
| Primary Part Number | MS20005-20 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Width Across Flats | 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 1.797 INCHES MINIMUM AND 1.827 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | BEVEL-CONICAL |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM 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 |
|---|---|
| MS20005-20 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| LS5908-5-20 | 3/2 Design control — primary reference U.S. Government activity |
| 5306PL1742062 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MS20005-20 | 5/9 Secondary reference U.S. Government activity |
| MS20005-20 | 3/2 Design control — primary reference U.S. Government activity |
| 5306PL1939953 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MIL-B-7838 | 5/1 Secondary reference U.S. Government activity |
| MIL-B-7838 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-362-0710 is a Bolt,internal Wrenching, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-362-0710 has 1 manufacturer part number on file: MS20005-20 (Leonardo Spa Helicopters Division - Production Site).
Key specifications for MS20005-20: Width Across Flats: 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN; Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 1.797 INCHES MINIMUM AND 1.827 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.