PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21577Gasket

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5330-01-256-0621 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-256-0621 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-256-0621. Primary manufacturer part number: 21577.
Features
  • Gasket — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Gasket, cataloged under National Stock Number 5330-01-256-0621, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGasket
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (CAGE 96046)
Technical Specifications
ParameterValue
NSN5330-01-256-0621
Primary Part Number21577
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2810-00-118-738521577 INTERCHANGEABLE
Plunger,relief Valve
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4730-01-140-94662157-7 INTERCHANGEABLE
Cap,quick Disconnect
Transdigm Inc Div Adelwiggins Group
5950-01-185-1997 INTERCHANGEABLE
Transformer
5330-01-327-700421577 INTERCHANGEABLE
Packing,preformed
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
21577 PRIMARY Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
Related Parts
2810-00-118-7385INTERCHANGEABLE
PLUNGER,RELIEF VALVE
21577
4730-01-140-9466INTERCHANGEABLE
CAP,QUICK DISCONNECT
2157-7
5950-01-185-1997INTERCHANGEABLE
TRANSFORMER
5330-01-327-7004INTERCHANGEABLE
PACKING,PREFORMED
21577

Frequently Asked Questions

What is NSN 5330-01-256-0621?

NSN 5330-01-256-0621 is a Gasket, manufactured by Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp., classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-256-0621?

NSN 5330-01-256-0621 has 1 cross-referenced part number: 21577 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.).

What NSN replaces 5330-01-256-0621?

There are 4 known substitutes for 5330-01-256-0621: 2810-00-118-7385, 4730-01-140-9466, 5950-01-185-1997 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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