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PartsTable / COMPONENT / 571D5
571D5 ✓ 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 3135 OR STEEL COMP 4140, thread_class: 3A NUT THREAD A, thread_length: 1.969 INCHES NOMINAL STUD THREAD IN, overall_length: 5.500 INCHES MINIMUM AND 5.531 INCHES MAXIMUM 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 Federal Logistics Information System (FLIS) under NSN 5307-00-206-2526, 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
571D5
NSN: 5307-00-206-2526
FSC: 5307
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL COMP 3135 OR STEEL COMP 4140
thread_class3A NUT THREAD A
thread_length1.969 INCHES NOMINAL STUD THREAD IN
overall_length5.500 INCHES MINIMUM AND 5.531 INCHES MAXIMUM IN
hardness_rating28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.750 INCHES STUD THREAD IN
cotter_pin_hole_diameter0.156 INCHES NOMINAL FIRST HOLE IN
thread_quantity_per_inch10 STUD THREAD
thread_series_designatorUNF NUT THREAD
material_document_and_classificationASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES
distance_from_cotter_pin_hole_centerline_to_nut_end0.281 INCHES NOMINAL FIRST HOLE IN
NSN5307-00-206-2526
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 571D5 · 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
•
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END: 0.281 INCHES NOMINAL FIRST HOLE IN
•
THREAD QUANTITY PER INCH: 10 STUD THREAD
•
THREAD LENGTH: 1.250 INCHES NOMINAL NUT THREAD IN
•
MATERIAL: STEEL COMP 3135 OR STEEL COMP 4140
•
THREAD CLASS: 3A NUT THREAD A
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END0.281 INCHES NOMINAL FIRST HOLE IN
THREAD QUANTITY PER INCH10 STUD THREAD
THREAD LENGTH1.250 INCHES NOMINAL NUT THREAD IN
MATERIALSTEEL COMP 3135 OR STEEL COMP 4140
THREAD CLASS3A NUT THREAD A
THREAD CLASS3A STUD THREAD A
THREAD LENGTH1.969 INCHES NOMINAL STUD THREAD IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
NOMINAL THREAD SIZE0.750 INCHES NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
B100Interchangeable
interchangeable cross-reference
interchangeable
AD22S4902-554933PC239Interchangeable
interchangeable cross-reference
interchangeable
AD22S4902-554941PC239Interchangeable
interchangeable cross-reference
interchangeable
11350Interchangeable
interchangeable cross-reference
interchangeable
65A81C57Interchangeable
interchangeable cross-reference
interchangeable
ABT11350Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 571D5?
571D5 is a STUD,PLAIN.
What parts can replace 571D5?
There are 16 known substitutes for 571D5: B100, AD22S4902-554933PC239, AD22S4902-554941PC239 and 13 more. Substitute compatibility should be verified for your specific system.
Is 571D5 still available?
571D5 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026