PartsTable
Technical Data Sheet
401870H ✓ Verified by PartsTable
· BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8640, thread_class: 3A NUT THREAD A, thread_length: 0.500 INCHES MINIMUM STUD THREAD IN, overall_length: 1.120 INCHES NOMINAL IN, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM, special_features: STUD END THREAD 0.003 IN. OVERSIZE IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-245-0326, 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
401870H
NSN: 5307-00-245-0326
FSC: 5307
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialSTEEL COMP 8640
thread_class3A NUT THREAD A
thread_length0.500 INCHES MINIMUM STUD THREAD IN
overall_length1.120 INCHES NOMINAL IN
hardness_rating28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
special_featuresSTUD END THREAD 0.003 IN. OVERSIZE IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES NUT THREAD IN
thread_pitch_diameters+0.2261 TO 0.2274 INCHES STUD THREAD IN
cotter_pin_hole_diameter0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
thread_quantity_per_inch20 STUD THREAD
NSN5307-00-245-0326
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 401870H · 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 CLASS: 3A NUT THREAD A
THREAD DIRECTION: RIGHT-HAND NUT THREAD
MATERIAL: STEEL COMP 8640
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END: 0.110 INCHES NOMINAL FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE
NOMINAL THREAD SIZE: 0.250 INCHES NUT THREAD IN
COTTER PIN HOLE DIAMETER: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSTUD END THREAD 0.003 IN. OVERSIZE IN
THREAD CLASS3A NUT THREAD A
THREAD DIRECTIONRIGHT-HAND NUT THREAD
MATERIALSTEEL COMP 8640
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END0.110 INCHES NOMINAL FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
COTTER PIN HOLE DIAMETER0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
THREAD LENGTH0.470 INCHES MINIMUM NUT THREAD IN
THREAD LENGTH0.500 INCHES MINIMUM STUD THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
401852P003Interchangeable
interchangeable cross-reference
interchangeable
401852HInterchangeable
interchangeable cross-reference
interchangeable
00308Interchangeable
interchangeable cross-reference
interchangeable
401852JInterchangeable
interchangeable cross-reference
interchangeable
401852P012Interchangeable
interchangeable cross-reference
interchangeable
401806HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 401870H?
401870H is a STUD,PLAIN.
What parts can replace 401870H?
There are 20 known substitutes for 401870H: 401852P003, 401852H, 00308 and 17 more. Substitute compatibility should be verified for your specific system.
Is 401870H still available?
401870H is currently cancelled.
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