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21308-7 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
Hama · ORING SEAL
PRODUCT OVERVIEW

21308-7: SEAT,HELICAL COMPRESSION SPRING.

This high-tech screen protector ensures perfect protection for your Samsung and prevents scratches as well as fingerprints from appearing. It maintains a brilliant display on your smartphone and is the ultimate accessory for everybody that attaches importance to premium protection. - Especially durable and sturdy screen protector made of toughened glass - Maximum scratch protection thanks to 10H Nano Tech coating - Highly transparent, ultra clear material in HD quality for outstanding brilliance - "Perfect touch" surface with anti-fingerprint coating - Attaches in an electrostatic way, therefore no adhesive needed, can be removed without leaving any residue - Easy-on: fixing aids for easy attachment of the glass protector - Antistatic microfibre cloth for cleaning the sensitive display - Case-friendly: Fits all cases, covers and sleeves thanks to the special design This part is cataloged in the U.S.

Government catalog under NSN 5340-01-429-5859, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
21308-7
NSN: 5340-01-429-5859
FSC: 5340 — Hardware, Commercial
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
Part Number21308-7
ManufacturerHama
NSN5340-01-429-5859
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21308-7 MFR: Hama ⚠ 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
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
21308-1002-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
21308 FIND 7Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21308-7?
21308-7 is a SEAT,HELICAL COMPRESSION SPRING manufactured by Hama.
What parts can replace 21308-7?
There are 2 known substitutes for 21308-7: 21308-1002-1, 21308 FIND 7. Substitute compatibility should be verified for your specific system.
What is the NSN for 21308-7?
21308-7 is cataloged in the U.S. Government catalog under NSN 5340-01-429-5859. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.