The Bolt,shoulder, cataloged under National Stock Number 5306-01-320-0607, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is M.s. Aerospace Inc. Dba Ms Aerospace Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-320-0607 |
| Primary Part Number | ST2137-04 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | M.s. Aerospace Inc. Dba Ms Aerospace Inc |
| Status | ACTIVE |
| Head Height | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Fastener Length | 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN |
| Shoulder Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.747 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hole Configuration Style | ROUND PERPENDICULAR |
| 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 CHAMFERED |
| 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 OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Head Diameter | 0.730 INCHES MINIMUM AND 0.770 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 | F |
| Part Number | Manufacturer |
|---|---|
| ST2137-04 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST2137-04 PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| 5306PL0894778 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-01-320-0607 is a Bolt,shoulder, manufactured by M.s. Aerospace Inc. Dba Ms Aerospace Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-320-0607 has 2 manufacturer part numbers on file: ST2137-04 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST2137-04 (M.s. Aerospace Inc. Dba Ms Aerospace Inc).
Key specifications for ST2137-04: Head Height: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Fastener Length: 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN; Shoulder Length: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.