PartsTable
Technical Data Sheet
BB8021 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN, thread_length: 0.250 INCHES NOMINAL IN, screw_material: STEEL COMP 1010 OR STEEL COMP 1020. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-206-7876, 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
BB8021
NSN: 5305-00-206-7876
FSC: 5305
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
head_styleROUND
head_height0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
thread_length0.250 INCHES NOMINAL IN
screw_materialSTEEL COMP 1010 OR STEEL COMP 1020
fastener_length0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM OR ZINC
thread_quantity_per_inch32
NSN5305-00-206-7876
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BB8021 · 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 SERIES DESIGNATOR: UNF
HEAD STYLE: ROUND
THREAD CLASS: 2A A
THREAD QUANTITY PER INCH: 32
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE
FASTENER LENGTH: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
INTERNAL DRIVE STYLE: SLOT
HEAD DIAMETER: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF
HEAD STYLEROUND
THREAD CLASS2A A
THREAD QUANTITY PER INCH32
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE
FASTENER LENGTH0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
INTERNAL DRIVE STYLESLOT
HEAD DIAMETER0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM OR ZINC
SCREW MATERIALSTEEL COMP 1010 OR STEEL COMP 1020
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1FX49Interchangeable
interchangeable cross-reference
interchangeable
F37030-238Interchangeable
interchangeable cross-reference
interchangeable
28212PC15Interchangeable
interchangeable cross-reference
interchangeable
390013PC481Interchangeable
interchangeable cross-reference
interchangeable
150-436GPC481Interchangeable
interchangeable cross-reference
interchangeable
533837PC481Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB8021?
BB8021 is a SCREW,MACHINE.
What parts can replace BB8021?
There are 19 known substitutes for BB8021: 1FX49, F37030-238, 28212PC15 and 16 more. Substitute compatibility should be verified for your specific system.
Is BB8021 still available?
BB8021 is currently cancelled.
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