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398690-01 — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

398690-01: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: COPPER AND ALUMINUM AND NICKEL ALLOY, thread_length: 1.687 INCHES NOMINAL STUD THREAD IN, overall_length: 9.250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND NUT THREAD, nominal_thread_size: 1.125 INCHES STUD THREAD IN, thread_series_designator: UNIFIED NATIONAL COARSE (UNC) STUD THREAD. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-530-7399, 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
398690-01
NSN: 5307-01-530-7399
NIINs: 015307399, 016412959
FSC: 5307 — Studs
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialCOPPER AND ALUMINUM AND NICKEL ALLOY
thread_length1.687 INCHES NOMINAL STUD THREAD IN
overall_length9.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND NUT THREAD
nominal_thread_size1.125 INCHES STUD THREAD IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) STUD THREAD
NSN5307-01-530-7399
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 398690-01 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 1.687 INCHES NOMINAL STUD THREAD IN
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
NOMINAL THREAD SIZE: 1.125 INCHES STUD THREAD IN
•
MATERIAL: COPPER AND ALUMINUM AND NICKEL ALLOY
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) STUD THREAD
TECHNICAL CHARACTERISTICS
THREAD LENGTH1.687 INCHES NOMINAL STUD THREAD IN
OVERALL LENGTH9.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE1.125 INCHES STUD THREAD IN
NOMINAL THREAD SIZE1.125 INCHES NUT THREAD IN
MATERIALCOPPER AND ALUMINUM AND NICKEL ALLOY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) NUT THREAD
SUBSTITUTES & CROSS-REFERENCES 1
RY-166400 ITEM 1.2Same 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 398690-01?
398690-01 is a STUD,PLAIN.
What parts can replace 398690-01?
There is 1 known substitute for 398690-01: RY-166400 ITEM 1.2. Substitute compatibility should be verified for your specific system.
What is the NSN for 398690-01?
398690-01 is cataloged in the U.S. Government catalog under NSN 5307-01-530-7399. 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.