The Bolt,machine, cataloged under National Stock Number 5306-01-589-5276, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck Fasteners Dba Huck Intl Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-589-5276 |
| Primary Part Number | MHSF-DT16-55D1 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck Fasteners Dba Huck Intl Inc |
| Status | ACTIVE |
| Head Height | 15.1 MILLIMETERS MAXIMUM MM |
| Fastener Length | 103.7 MILLIMETERS MINIMUM AND 105.3 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | ASTM B695, TYPE II, CLASS 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 32.8 MILLIMETERS MAXIMUM MM |
| Thread Length | 55.2 MILLIMETERS MINIMUM AND 55.8 MILLIMETERS MAXIMUM MM |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 49.0 MILLIMETERS MINIMUM AND 61.0 MILLIMETERS MAXIMUM MM |
| Width Between Flats | 20.5 MILLIMETERS MINIMUM AND 21.0 MILLIMETERS MAXIMUM MM |
| Grip Diameter | 15.7 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 12422435-004 | Oshkosh Defense Llc (USA) |
| MHSF-DT16-55D1 PRIMARY | Huck Fasteners Dba Huck Intl Inc (USA) |
| MHSF-DT16-55U PRIMARY | Huck Fasteners Dba Huck Intl Inc (USA) |
| 12422435-004 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| MHSF-DT16-55U | 3/9 Design control — primary reference Huck Mfg Co Waco Div |
| 12422435 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
| 12422435-004 | 5/9 Secondary reference Oshkosh Corp |
NSN 5306-01-589-5276 is a Bolt,machine, manufactured by Huck Fasteners Dba Huck Intl Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-589-5276 has 4 manufacturer part numbers on file: 12422435-004 (Oshkosh Defense Llc), MHSF-DT16-55D1 (Huck Fasteners Dba Huck Intl Inc), MHSF-DT16-55U (Huck Fasteners Dba Huck Intl Inc), 12422435-004 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 5306-01-666-6646, 5306-01-666-6678, 5306-01-666-6746. Verify interchangeability with system specifications before substitution.
Key specifications for MHSF-DT16-55D1: Head Height: 15.1 MILLIMETERS MAXIMUM MM; Fastener Length: 103.7 MILLIMETERS MINIMUM AND 105.3 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: ASTM B695, TYPE II, CLASS 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Extended Washer Diameter: 32.8 MILLIMETERS MAXIMUM MM. 12 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.