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Technical Data Sheet
PartsTable / COMPONENT / SMB320835
SMB320835 ✓ 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,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.312 INCHES MINIMUM IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-543-5732, 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
SMB320835
NSN: 5305-00-543-5732
FSC: 5305
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
thread_class2A A
head_diameter0.500 INCHES NOMINAL IN
thread_length0.312 INCHES MINIMUM IN
fastener_length1.125 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.250 INCHES IN
first_diameter_from_head0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
NSN5305-00-543-5732
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SMB320835 · 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: MIL-F-14072 E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD CLASS: 2A A
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD DIAMETER: 0.500 INCHES NOMINAL IN
•
HEAD STYLE: KNURLED NO. 1
•
THREAD LENGTH: 0.312 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
HEAD DIAMETER0.500 INCHES NOMINAL IN
HEAD STYLEKNURLED NO. 1
THREAD LENGTH0.312 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AN385A3P10Interchangeable
interchangeable cross-reference
interchangeable
5523Interchangeable
interchangeable cross-reference
interchangeable
2152374Interchangeable
interchangeable cross-reference
interchangeable
3730825-1Interchangeable
interchangeable cross-reference
interchangeable
103595Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SMB320835?
SMB320835 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace SMB320835?
There are 5 known substitutes for SMB320835: AN385A3P10, 5523, 2152374 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB320835?
SMB320835 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-543-5732. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026