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421806 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

421806: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include shape: RECTANGULAR, width: 2.000 INCHES NOMINAL IN, length: 3.500 INCHES NOMINAL IN, material: STEEL, thickness: 0.500 INCHES NOMINAL IN, special_features: DRAWING IS EXPORT CONTROLLED DO NRELEASE OUTSIDE TO THE U.S.A. WITHOUT GOVERNMENT APPROVAL OR A VALIDATED EXPORT LICENSE.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-209-8326, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
421806
NSN: 5340-01-209-8326
NIINs: 012098326, 015689296
FSC: 5340 — Hardware, Commercial
CAGE: 07524 — DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER (USA)
SPECIFICATIONS
shapeRECTANGULAR
width2.000 INCHES NOMINAL IN
length3.500 INCHES NOMINAL IN
materialSTEEL
thickness0.500 INCHES NOMINAL IN
special_featuresDRAWING IS EXPORT CONTROLLED DO NRELEASE OUTSIDE TO THE U.S.A. WITHOUT GOVERNMENT APPROVAL OR A VALIDATED EXPORT LICENSE
mounting_hole_diameter0.250 INCHES NOMINAL ALL HOLES IN
mounting_hole_quantity2
end_item_identificationLIGHT ARMOURED VEHICLE
part_name_assigned_by_controlling_agencyPAD SENSOR
NSN5340-01-209-8326
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 421806 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN TYPE: SOLID OR SPLIT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-637 FED SPEC 1ST MATERIAL RESPONSE OR SAE CA 360, COMP 22 ASSN STD 2ND MATERIAL RESPONSE
•
MATERIAL: COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OR COPPER ALLOY 360
TECHNICAL CHARACTERISTICS
DESIGN TYPESOLID OR SPLIT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-637 FED SPEC 1ST MATERIAL RESPONSE OR SAE CA 360, COMP 22 ASSN STD 2ND MATERIAL RESPONSE
MATERIALCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OR COPPER ALLOY 360
SUBSTITUTES & CROSS-REFERENCES 1
E-3947 PIECE7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 421806?
421806 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 421806?
There is 1 known substitute for 421806: E-3947 PIECE7. Substitute compatibility should be verified for your specific system.
What is the NSN for 421806?
421806 is cataloged in the U.S. Government catalog under NSN 5340-01-209-8326. This indicates validated use in U.S. government and defense supply chains.
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