PartsTable
Technical Data Sheet
BB26083 ✓ 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 SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, thread_length: 0.312 INCHES MINIMUM IN, fastener_length: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-011-5321, 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
BB26083
NSN: 5305-00-011-5321
FSC: 5305
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class3A A
thread_length0.312 INCHES MINIMUM IN
fastener_length0.312 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-011-5321
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BB26083 · 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: 0.312 INCHES MINIMUM IN
MATERIAL: STEEL COMP 4037 OVERALL
THREAD QUANTITY PER INCH: 18
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
THREAD CLASS: 3A A
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 4 STYLE
POINT STYLE: CUP
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.312 INCHES MINIMUM IN
MATERIALSTEEL COMP 4037 OVERALL
THREAD QUANTITY PER INCH18
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS3A A
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 4 STYLE
POINT STYLECUP
WIDTH ACROSS FLATS0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
FASTENER LENGTH0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
KCI-100RInterchangeable
interchangeable cross-reference
interchangeable
MIL-B-10743Interchangeable
interchangeable cross-reference
interchangeable
ML161-AInterchangeable
interchangeable cross-reference
interchangeable
8233Interchangeable
interchangeable cross-reference
interchangeable
154-361Interchangeable
interchangeable cross-reference
interchangeable
694041-182Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB26083?
BB26083 is a SETSCREW.
What parts can replace BB26083?
There are 20 known substitutes for BB26083: KCI-100R, MIL-B-10743, ML161-A and 17 more. Substitute compatibility should be verified for your specific system.
Is BB26083 still available?
BB26083 is currently cancelled.
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