The Bolt,tee Head, cataloged under National Stock Number 5306-01-216-0153, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-216-0153 |
| Primary Part Number | ST2137-01 |
| Item Name | Bolt,tee Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Fastener Length | 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN |
| Thread Length | 0.387 INCHES NOMINAL IN |
| Material Document and Classification | AMS 7460 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.730 INCHES MINIMUM AND 0.737 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 |
| Part Number | Manufacturer |
|---|---|
| ST2137-01 | Rtx Corporation Div Pratt & Whitney (USA) |
| ST2137-01 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 5306PL1498547 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| ST2137-01 | 5/9 Secondary reference Gkn Aerospace Chem-Tronics Inc |
NSN 5306-01-216-0153 is a Bolt,tee Head, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-216-0153 has 2 manufacturer part numbers on file: ST2137-01 (Rtx Corporation Div Pratt & Whitney), ST2137-01 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for ST2137-01: Head Height: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Fastener Length: 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN; Thread Length: 0.387 INCHES NOMINAL IN; Material Document and Classification: AMS 7460 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 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.