PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S321Spring,helical,compression

Merck and Co Inc · NSN 5360-00-527-2436 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-527-2436 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-527-2436. Primary manufacturer part number: S321.
Features
  • Spring,helical,compression — FSC 5360
  • Coil Helix Direction: RIGHT-HAND
  • End Style: SPRING END,SQUARED BOTH ENDS
  • Spring Length Under Load: 0.395 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Spring Free Length: 0.500 INCHES NOMINAL IN
  • Coil Quantity: 10
  • Load Rating: 0.448 POUNDS NOMINAL LBS
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Copper Alloy Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-527-2436, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Merck and Co Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-527-2436
Primary Part NumberS321
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerMerck and Co Inc
StatusACTIVE
Coil Helix DirectionRIGHT-HAND
End StyleSPRING END,SQUARED BOTH ENDS
Spring Length Under Load0.395 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Spring Free Length0.500 INCHES NOMINAL IN
Coil Quantity10
Load Rating0.448 POUNDS NOMINAL LBS
MaterialCOPPER ALLOY OVERALL
Inside Diameter0.250 INCHES NOMINAL IN
Spring Free Outside Diameter0.2862 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6810-00-034-67080CEN155 INTERCHANGEABLE
Sodium Hypophosphit
Occidental Chemical Corp. Dba Oxychem
5330-00-119-7594 INTERCHANGEABLE
Gasket
4530-00-274-63344.50 PLP 60DEG INTERCHANGEABLE
Nozzle,oil Burner,pressure Atomi
Monarch Mfg Works Inc
4730-00-278-457568-4-4 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Brass Craft Mfg Co Sub of Masco Corp
5330-00-374-285325271-192 INTERCHANGEABLE
Seal,mechanical,rotary Shaft
The Gorman-Rupp Company Div Gorman-Rupp
5935-00-581-6694954716 INTERCHANGEABLE
Connector,plug,electrical
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5120-01-039-8106 INTERCHANGEABLE
Socket,socket Wrench
4730-01-130-543961149 INTERCHANGEABLE
Adapter,straight,pipe to Hose
United States Plastic Corp
5998-01-422-642761149 INTERCHANGEABLE
Circuit Card Assembly
Dynalec Corporation
5120-01-674-0812FRS S321 INTERCHANGEABLE
Socket,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
R8754PC23 Calgon Corp (USA)
S321 Calgon Corp (USA)
S-321 Zf Industrieantriebe Witten Gmbh (DEU)
S321 PRIMARY Merck and Co Inc (USA)
6114-9 Calgon Corp (USA)
Related Parts
6810-00-034-6708INTERCHANGEABLE
SODIUM HYPOPHOSPHIT
0CEN155
5330-00-119-7594INTERCHANGEABLE
GASKET
4530-00-274-6334INTERCHANGEABLE
NOZZLE,OIL BURNER,PRESSURE ATOMI
4.50 PLP 60DEG
4730-00-278-4575INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
68-4-4
5330-00-374-2853INTERCHANGEABLE
SEAL,MECHANICAL,ROTARY SHAFT
25271-192
5935-00-581-6694INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
954716
5120-01-039-8106INTERCHANGEABLE
SOCKET,SOCKET WRENCH
4730-01-130-5439INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
61149
5998-01-422-6427INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
61149
5120-01-674-0812INTERCHANGEABLE
SOCKET,SOCKET WRENCH
FRS S321
2050-01-674-4095INTERCHANGEABLE
BUOY,MOORING

Frequently Asked Questions

What is NSN 5360-00-527-2436?

NSN 5360-00-527-2436 is a Spring,helical,compression, manufactured by Merck and Co Inc, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-527-2436?

NSN 5360-00-527-2436 has 5 cross-referenced part numbers: R8754PC23 (Calgon Corp), S321 (Calgon Corp), S-321 (Zf Industrieantriebe Witten Gmbh), S321 (Merck and Co Inc), 6114-9 (Calgon Corp).

What NSN replaces 5360-00-527-2436?

There are 11 known substitutes for 5360-00-527-2436: 6810-00-034-6708, 5330-00-119-7594, 4530-00-274-6334 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S321?

Key specifications for S321: Coil Helix Direction: RIGHT-HAND; End Style: SPRING END,SQUARED BOTH ENDS; Spring Length Under Load: 0.395 INCHES NOMINAL IN; Style Designator: CYLINDRICAL. 10 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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