PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SJ11Retainer,helical Compression Spr

Circor Naval Solutions Llc Dba Warren Pumps · NSN 5340-00-945-1402 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-945-1402 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-945-1402. Primary manufacturer part number: SJ11.
Features
  • Retainer,helical Compression Spr — FSC 5340
  • Body Inside Diameter: 0.531 INCHES NOMINAL IN
  • Flange Diameter: 1.875 INCHES NOMINAL IN
  • Style Designator: IRREGULAR
  • Material: COPPER ALLOY 905
  • Body Outside Diameter: 0.750 INCHES NOMINAL IN
  • Flange Thickness: 0.125 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
Applications
  • Applications requiring Copper Alloy 905 construction
General Description

The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-945-1402, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-945-1402
Primary Part NumberSJ11
Item NameRetainer,helical Compression Spr
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Body Inside Diameter0.531 INCHES NOMINAL IN
Flange Diameter1.875 INCHES NOMINAL IN
Style DesignatorIRREGULAR
MaterialCOPPER ALLOY 905
Body Outside Diameter0.750 INCHES NOMINAL IN
Flange Thickness0.125 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
4320-00-816-4152UC-18 INTERCHANGEABLE
Cylinder Sleeve
Circor Naval Solutions Llc Dba Warren Pumps
4820-00-949-7234TC-18 INTERCHANGEABLE
Seat,valve
Circor Naval Solutions Llc Dba Warren Pumps
4320-01-084-209011321 INTERCHANGEABLE
Gland,lower Cylinder Head
Rps-Fl, Inc. Dba Rps Inc
4820-01-192-4548XH-1 INTERCHANGEABLE
Body,valve
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
BS5-2351 Circor Naval Solutions Llc Dba Warren Pumps (USA)
945-1402 Marine Diesel, Inc. Dba Marine Diesel (USA)
BS5-2351,PC.169 Circor Naval Solutions Llc Dba Warren Pumps (USA)
SJ11 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
4320-00-816-4152INTERCHANGEABLE
CYLINDER SLEEVE
UC-18
4820-00-949-7234INTERCHANGEABLE
SEAT,VALVE
TC-18
4320-01-084-2090INTERCHANGEABLE
GLAND,LOWER CYLINDER HEAD
11321
4820-01-192-4548INTERCHANGEABLE
BODY,VALVE
XH-1

Frequently Asked Questions

What is NSN 5340-00-945-1402?

NSN 5340-00-945-1402 is a Retainer,helical Compression Spr, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-945-1402?

NSN 5340-00-945-1402 has 4 cross-referenced part numbers: BS5-2351 (Circor Naval Solutions Llc Dba Warren Pumps), 945-1402 (Marine Diesel, Inc. Dba Marine Diesel), BS5-2351,PC.169 (Circor Naval Solutions Llc Dba Warren Pumps), SJ11 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 5340-00-945-1402?

There are 4 known substitutes for 5340-00-945-1402: 4320-00-816-4152, 4820-00-949-7234, 4320-01-084-2090 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SJ11?

Key specifications for SJ11: Body Inside Diameter: 0.531 INCHES NOMINAL IN; Overall Height: 0.938 INCHES NOMINAL IN; Flange Diameter: 1.875 INCHES NOMINAL IN; Style Designator: IRREGULAR. 8 total characteristics are documented in the Federal Logistics Information System.

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