The Clamp,block,section, cataloged under National Stock Number 5340-01-323-3398, is classified within Federal Supply Class 5340 (Hardware, Commercial) 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-323-3398 |
| Primary Part Number | 4078524 |
| Item Name | Clamp,block,section |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| FSC Application Data | INLET/FAN MODULE |
| Style Designator | RECTANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 4077297 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4078524 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4078524 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 5340PL0850115 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5340PL1866602 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5340-01-323-3398 is a Clamp,block,section, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-323-3398 has 3 manufacturer part numbers on file: 4077297 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4078524 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4078524 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4078524: FSC Application Data: INLET/FAN MODULE; Style Designator: RECTANGULAR; Special Features: INCL P/NS 4077299 AND 4071674; End Item Identification: F100PW0229 ENGINE. 2 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.