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639AS1620 — CLAMP,SYNCHRO

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

639AS1620: CLAMP,SYNCHRO.

The CLAMP,SYNCHRO is a the manufacturer industrial component. Key specifications include width: 0.390 INCHES NOMINAL IN, material: STEEL COMP 301, hole_diameter: 5.072 INCHES NOMINAL IN, surface_treatment: OXIDE, material_document_and_classification: QQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE, surface_treatment_document_and_classification: MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-078-2606, 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
639AS1620
NSN: 5340-01-078-2606
FSC: 5340 — Hardware, Commercial
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
width0.390 INCHES NOMINAL IN
materialSTEEL COMP 301
hole_diameter5.072 INCHES NOMINAL IN
surface_treatmentOXIDE
material_document_and_classificationQQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-078-2606
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 639AS1620 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: OXIDE
•
WIDTH: 0.390 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 301
•
HOLE DIAMETER: 5.072 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE
SURFACE TREATMENTOXIDE
WIDTH0.390 INCHES NOMINAL IN
MATERIALSTEEL COMP 301
HOLE DIAMETER5.072 INCHES NOMINAL IN
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 3
10117591Reference document
Same NSN cross-reference
Reference document — Informative reference only
588.70-100004-000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
588.70-100012-002Same 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 639AS1620?
639AS1620 is a CLAMP,SYNCHRO.
What parts can replace 639AS1620?
There are 3 known substitutes for 639AS1620: 10117591, 588.70-100004-000, 588.70-100012-002. Substitute compatibility should be verified for your specific system.
What is the NSN for 639AS1620?
639AS1620 is cataloged in the U.S. Government catalog under NSN 5340-01-078-2606. This indicates validated use in U.S. government and defense supply chains.
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