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SK04012 — TURNBUCKLE BODY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

SK04012: TURNBUCKLE BODY.

The TURNBUCKLE BODY is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, thread_class: 3B BODY, nominal_thread_size: 0.312 INCHES BODY IN, end_item_identification: W/S:ENGINE, AIRCRAFT F-404, metallic_hardness_rating: 26.0 MINIMUM ROCKWELL C AND 44.0 MAXIMUM ROCKWELL C, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF) BODY. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-123-2285, 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
SK04012
NSN: 5340-01-123-2285
FSC: 5340 — Hardware, Commercial
CAGE: 06710 — VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
thread_class3B BODY
nominal_thread_size0.312 INCHES BODY IN
end_item_identificationW/S:ENGINE, AIRCRAFT F-404
metallic_hardness_rating26.0 MINIMUM ROCKWELL C AND 44.0 MAXIMUM ROCKWELL C
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) BODY
material_document_and_classificationAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-123-2285
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SK04012 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.312 INCHES BODY IN
•
THREAD CLASS: 3B BODY
•
MATERIAL: IRON ALLOY 660 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) BODY
•
METALLIC HARDNESS RATING: 26.0 MINIMUM ROCKWELL C AND 44.0 MAXIMUM ROCKWELL C
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.312 INCHES BODY IN
THREAD CLASS3B BODY
END ITEM IDENTIFICATIONW/S:ENGINE, AIRCRAFT F-404
MATERIALIRON ALLOY 660 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) BODY
METALLIC HARDNESS RATING26.0 MINIMUM ROCKWELL C AND 44.0 MAXIMUM ROCKWELL C
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
10112430Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 SK04012?
SK04012 is a TURNBUCKLE BODY.
What parts can replace SK04012?
There is 1 known substitute for SK04012: 10112430. Substitute compatibility should be verified for your specific system.
What is the NSN for SK04012?
SK04012 is cataloged in the U.S. Government catalog under NSN 5340-01-123-2285. This indicates validated use in U.S. government and defense supply chains.
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