The Bolt,diffuser Case, cataloged under National Stock Number 5306-00-425-8450, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-425-8450 |
| Primary Part Number | 4037654 |
| Item Name | Bolt,diffuser Case |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| General Characteristics Item Description | NICKEL ALLOY,SILVER PLATED,3.125 IN. MIN 3.145 IN. MAX LG,0.4375-20 UNJF 3A RH THD A |
| Precious Material | SILVER |
| 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 |
|---|---|
| 4037654 | Beta Engineering, Inc. Dba Beta Engineering Inc (USA) |
| 4037654 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 4037654 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| 4037654 | 7/2 Vendor item drawing reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 4037654 | 5/9 Secondary reference U.S. Government activity |
| 4037654 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 4037654 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-00-425-8450 is a Bolt,diffuser Case, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-425-8450 has 3 manufacturer part numbers on file: 4037654 (Beta Engineering, Inc. Dba Beta Engineering Inc), 4037654 (Rtx Corporation Div Pratt & Whitney), 4037654 (M.s. Aerospace Inc. Dba Ms Aerospace Inc).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-194-7684. Verify interchangeability with system specifications before substitution.
Key specifications for 4037654: General Characteristics Item Description: NICKEL ALLOY,SILVER PLATED,3.125 IN. MIN 3.145 IN. MAX LG,0.4375-20 UNJF 3A RH THD A; Precious Material: SILVER. 2 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.