The Bolt,tee Head, cataloged under National Stock Number 5306-00-499-4755, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-499-4755 |
| Primary Part Number | 5172D |
| Item Name | Bolt,tee Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Head Inside Diameter | 0.4375 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN |
| Fastener Length | 2.503 INCHES MINIMUM AND 2.508 INCHES MAXIMUM IN |
| Tee Bolt Cylindrical Head Diameter | 0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN |
| Thread Length | 1.563 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.563 INCHES IN |
| Head Style | TEE NO. 4 |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.982 INCHES MINIMUM AND 0.984 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 5172D PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5172D | 3/9 Design control — primary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 5306-00-499-4755 is a Bolt,tee Head, manufactured by Fairbanks Morse, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-499-4755 has 1 manufacturer part number on file: 5172D (Fairbanks Morse, Llc).
Key specifications for 5172D: Head Inside Diameter: 0.4375 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN; Fastener Length: 2.503 INCHES MINIMUM AND 2.508 INCHES MAXIMUM IN; Tee Bolt Cylindrical Head Diameter: 0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN; Thread Length: 1.563 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN. 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.