The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-162-0017, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-162-0017 |
| Primary Part Number | 12315741 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Fastener Length | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Internal Thread Length | 0.250 INCHES MINIMUM COUNTERBORE IN |
| Thread Series | UNS COUNTERBORE |
| Internal Thread Direction | RIGHT-HAND COUNTERBORE |
| Thread Length | 0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Threads Per Inch | 24 COUNTERBORE |
| Style Designator | COUNTERBORE THREADED |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES COUNTERBORE IN |
| Width Between Flats | 0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Internal Thread Class | 2B COUNTERBORE |
| Concentric Hole Diameter | 0.174 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Surface Treatment | COPPER OR TIN OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1212 OR STEEL COMP 1213 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 | X |
| Part Number | Manufacturer |
|---|---|
| 12315741 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-01-162-0017 is a Bolt,internally Relieved Body, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-162-0017 has 1 manufacturer part number on file: 12315741 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12315741: Head Height: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN; Fastener Length: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Internal Thread Length: 0.250 INCHES MINIMUM COUNTERBORE IN. 22 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.