The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-01-253-6898, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-253-6898 |
| Primary Part Number | 137556-4 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Opening Inside Diameter | 0.656 INCHES NOMINAL IN |
| Body Outside Diameter | 2.300 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) |
| Style Designator | THRU-HOLE |
| Mounting Device Quantity | 4 |
| 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 |
|---|---|
| 137556-4 | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 137556-4 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 3-200-125-CBJ-1 | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10113037 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5340-01-253-6898 is a Boot,dust and Moisture Seal, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-253-6898 has 3 manufacturer part numbers on file: 137556-4 (Honeywell International, Inc Div Aerospace-Tucson), 137556-4 (Honeywell International Inc. Div Aerospace - Torrance), 3-200-125-CBJ-1 (Bellofram Corporation).
Key specifications for 137556-4: Overall Height: 1.250 INCHES NOMINAL IN; Opening Inside Diameter: 0.656 INCHES NOMINAL IN; Body Outside Diameter: 2.300 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S). 5 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.