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Technical Data Sheet
PartsTable / COMPONENT / 99056
99056 ✓ 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 VALVE,VENT is a the manufacturer industrial component. Key specifications include color: BLACK, material: STEEL OVERALL, thread_length: 0.375 INCHES NOMINAL IN, special_features: 1/4-20 UNC INSIDE THREAD, thread_direction: RIGHT-HAND, surface_treatment: PHOSPHATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-568-7568, 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
99056
NSN: 5325-01-568-7568
FSC: 5325
CAGE: 0BT64 — BARRETT FIREARMS MANUFACTURING, INC. DBA BARRETT FIREARMS MANUFACTURING INC (USA)
SPECIFICATIONS
colorBLACK
materialSTEEL OVERALL
thread_length0.375 INCHES NOMINAL IN
special_features1/4-20 UNC INSIDE THREAD
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5325-01-568-7568
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 99056 · 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: 0.375 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
THREAD QUANTITY PER INCH: 16
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD QUANTITY PER INCH16
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.375 INCHES IN
SPECIAL FEATURES1/4-20 UNC INSIDE THREAD
COLORBLACK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
99056Interchangeable
interchangeable cross-reference
interchangeable
99056-1Interchangeable
interchangeable cross-reference
interchangeable
28076Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 99056?
99056 is a VALVE,VENT.
What parts can replace 99056?
There are 3 known substitutes for 99056: 99056, 99056-1, 28076. Substitute compatibility should be verified for your specific system.
What is the NSN for 99056?
99056 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-568-7568. 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