The Bolt,eye, cataloged under National Stock Number 5306-00-271-6872, 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 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-271-6872 |
| Primary Part Number | 7971597 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.391 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN |
| Shank Length | 1.391 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN |
| Style Designator | ROUND, CLOSED W/SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 1.8125 INCHES NOMINAL IN |
| Shoulder Diameter | 0.437 INCHES NOMINAL IN |
| Shoulder Thickness | 0.062 INCHES NOMINAL IN |
| Distance From Threaded End to Shank Hole Center | 1.250 INCHES MINIMUM AND 1.281 INCHES MAXIMUM FIRST HOLE IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Eye Inside Diameter | 0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Eye Stock Thickness | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Eye Outside Width | 0.437 INCHES NOMINAL 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 |
|---|---|
| 7971597 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| AN42B13 | 3/2 Design control — primary reference U.S. Government activity |
| 5306PL1943362 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AN42B13 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-271-6872 is a Bolt,eye, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-271-6872 has 1 manufacturer part number on file: 7971597 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7971597: Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.391 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Shank Unthreaded Hole Diameter: 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN. 21 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.