NSN 5340-01-334-5735 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-334-5735. Manufacturer of record part number: 5557-9.
Also searched as5340-01-334-5735 ·
5340013345735 ·
NIIN 013345735 ·
01-334-5735 ·
FSC 5340 Hardware, Commercial · CAGE 10203 · 5557-9
The Cap,filler Opening, cataloged under National Stock Number 5340-01-334-5735, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Wisco Products Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
Technical Specifications
Parameter
Value
NSN
5340-01-334-5735
Primary Part Number
5557-9
Item Name
Cap,filler Opening
FSC / FSG
5340 / 53 — Hardware, Commercial
Manufacturer
Wisco Products Inc
Status
ACTIVE
System for Which Designed
PRESSURIZED
Pressure Relief Method
AUTOMATIC
Lifecycle & Compliance
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
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4920-01-491-5264802027213819-1POSSIBLE MATCH
SELF TEST ADAPTER,A
Possible match (shared part number)Electro Impulse Laboratory Inc Dba Electro Impulse Inc
1080-01-541-3087KP762POSSIBLE MATCH
COVER,CAMOUFLAGE SCREENING
Possible match (shared part number)Oshkosh Defense Llc
5342-01-672-8301555-79POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc
NSN 5340-01-334-5735 is a Cap,filler Opening, manufactured by Wisco Products Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
What part numbers are listed for NSN 5340-01-334-5735?
NSN 5340-01-334-5735 has 1 manufacturer part number on file: 5557-9 (Wisco Products Inc).
What NSN replaces 5340-01-334-5735?
3 possible matches (shared part number, not a government interchangeability claim): 4920-01-491-5264, 1080-01-541-3087, 5342-01-672-8301. Verify interchangeability with system specifications before substitution.
What are the specifications of 5557-9?
Key specifications for 5557-9: System for Which Designed: PRESSURIZED; Pressure Relief Method: AUTOMATIC. 2 specifications are documented in the U.S. Government catalog.
Is NSN 5340-01-334-5735 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.