The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-302-5639, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Eltee Tool & Die Llc Dba Eltee Tool & Die Co. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-302-5639 |
| Primary Part Number | 4-80726 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Eltee Tool & Die Llc Dba Eltee Tool & Die Co |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 3.750 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.875 INCHES NOMINAL IN |
| Thread Length | 0.650 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM FIRST HOLE IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | AMS6260 ASSN STD 1ST MATERIAL RESPONSE OR AMS6250 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.625 INCHES IN |
| Head Style | DEE |
| Thread Direction | RIGHT-HAND |
| Shoulder Diameter | 1.750 INCHES NOMINAL IN |
| Concentric Hole Diameter | 1.310 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Shoulder Length | 3.122 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN |
| Thread Series Designator | UN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.640 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 1.990 INCHES MINIMUM AND 2.050 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 |
NSN 5306-00-302-5639 is a Bolt,internally Relieved Body, manufactured by Eltee Tool & Die Llc Dba Eltee Tool & Die Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-302-5639 has 2 manufacturer part numbers on file: 4-80726 (Eltee Tool & Die Llc Dba Eltee Tool & Die Co), 4-80726 (Skyspares Parts Inc).
Key specifications for 4-80726: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 3.750 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.875 INCHES NOMINAL IN; Thread Length: 0.650 INCHES NOMINAL 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.