PartsTable
Technical Data Sheet
Download PDF

538108 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

538108: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. This part is cataloged in the U.S. Government catalog under NSN 5340-00-884-9989, 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
538108
NSN: 5340-00-884-9989
NIINs: 008849989, 014275183
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
special_featuresBRAND NAME DESCRIPTION C4/CO BROWN;ADDITIONAL ITEM INFORMATION 14X17 C4/CO BROWN;REQUIRED MINIMUM ORDER QUANTITY 1;REQUIRED MULTIPLE ORDER QUANTITY 1
NSN5340-00-884-9989
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 538108 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
•
FSC APPLICATION DATA: PROPELLER,AIRCRAFT,VARIABLE PITCH
•
FIRST STEP DIAMETER: 0.4930 INCHES MINIMUM AND 0.4940 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.3500 INCHES MINIMUM AND 0.3700 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.0800 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1200 INCHES NOMINAL IN
FSC APPLICATION DATAPROPELLER,AIRCRAFT,VARIABLE PITCH
FIRST STEP DIAMETER0.4930 INCHES MINIMUM AND 0.4940 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
END DIAMETER0.3500 INCHES MINIMUM AND 0.3700 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.0800 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5610 ASSN STD SINGLE MATERIAL RESPONSE
SPECIAL FEATURESNOT CASEHARDENED
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 538108?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 538108?
538108 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 538108?
538108 is cataloged in the U.S. Government catalog under NSN 5340-00-884-9989. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 538108

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.