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7403138 — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7403138: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740, thread_class: 3A NUT THREAD A, thread_length: 0.690 INCHES MINIMUM NUT THREAD IN, overall_length: 2.000 INCHES NOMINAL IN, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM, thread_direction: RIGHT-HAND STUD THREAD. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-678-3504, 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
7403138
NSN: 5307-00-678-3504
NIINs: 006783504, 014334769
FSC: 5307 — Studs
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740
thread_class3A NUT THREAD A
thread_length0.690 INCHES MINIMUM NUT THREAD IN
overall_length2.000 INCHES NOMINAL IN
hardness_rating28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.438 INCHES NUT THREAD IN
thread_pitch_diameters+0.3916 TO 0.3936 INCHES STUD THREAD IN
thread_quantity_per_inch14 STUD THREAD
thread_series_designatorUNF NUT THREAD
material_document_and_classificationQQ-S-624 FED SPEC ALL MATERIAL RESPONSES
NSN5307-00-678-3504
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7403138 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.940 INCHES MINIMUM STUD THREAD IN
•
HARDNESS RATING: 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
•
THREAD PITCH DIAMETERS: +0.3916 TO 0.3936 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.940 INCHES MINIMUM STUD THREAD IN
THREAD LENGTH0.690 INCHES MINIMUM NUT THREAD IN
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
THREAD PITCH DIAMETERS+0.3916 TO 0.3936 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC ALL MATERIAL RESPONSES
OVERALL LENGTH2.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.438 INCHES NUT THREAD IN
SUBSTITUTES & CROSS-REFERENCES 2
401848HReference document
Same NSN cross-reference
Reference document — Secondary reference
7084488Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 7403138?
7403138 is a STUD,PLAIN.
What parts can replace 7403138?
There are 2 known substitutes for 7403138: 401848H, 7084488. Substitute compatibility should be verified for your specific system.
What is the NSN for 7403138?
7403138 is cataloged in the U.S. Government catalog under NSN 5307-00-678-3504. This indicates validated use in U.S. government and defense supply chains.
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