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11639656 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

11639656: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, thread_size: 3/8-16 UNC-2A A, shank_length: 1.150 INCHES NOMINAL IN, overall_height: 4.700 INCHES NOMINAL IN, style_designator: TIPPED THREADED STUD, material_hardness_rating: 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-176-0450, 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
11639656
NSN: 5340-00-176-0450
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
thread_size3/8-16 UNC-2A A
shank_length1.150 INCHES NOMINAL IN
overall_height4.700 INCHES NOMINAL IN
style_designatorTIPPED THREADED STUD
material_hardness_rating45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM
outside/top_flange_diameter2.900 INCHES NOMINAL IN
material_document_and_classificationMIL-STD-417, TYPE R, CLASS RS, GRADE RS730ABC1F2K1N MIL STD SINGLE MATERIAL RESPONSE
NSN5340-00-176-0450
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 11639656 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
•
OUTSIDE/TOP FLANGE DIAMETER: 2.900 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM
•
SHANK LENGTH: 1.150 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TIPPED THREADED STUD
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-STD-417, TYPE R, CLASS RS, GRADE RS730ABC1F2K1N MIL STD SINGLE MATERIAL RESPONSE
•
THREAD SIZE: 3/8-16 UNC-2A A
•
COLOR: BLACK
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.700 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER2.900 INCHES NOMINAL IN
MATERIAL HARDNESS RATING45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM
SHANK LENGTH1.150 INCHES NOMINAL IN
STYLE DESIGNATORTIPPED THREADED STUD
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-STD-417, TYPE R, CLASS RS, GRADE RS730ABC1F2K1N MIL STD SINGLE MATERIAL RESPONSE
THREAD SIZE3/8-16 UNC-2A A
COLORBLACK
MATERIALRUBBER SYNTHETIC
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 1
5340001760450Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 11639656?
11639656 is a BUMPER.
What parts can replace 11639656?
There is 1 known substitute for 11639656: 5340001760450. Substitute compatibility should be verified for your specific system.
What is the NSN for 11639656?
11639656 is cataloged in the U.S. Government catalog under NSN 5340-00-176-0450. This indicates validated use in U.S. government and defense supply chains.
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