PartsTable
Technical Data Sheet
653B ✓ 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 CAP,PNEUMATIC VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 2A INTERNAL A, connection_style: PLAIN, special_features: CAP USED ON VALVES THAT DO NOT HAVE CAP THREADS. SCREWS INTO VALVE CORETHREADS, style_designator: CAP, VALVE SEALING, thread_direction: RIGHT-HAND INTERNAL.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-292-4986, 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
653B
NSN: 5305-00-292-4986
FSC: 5305
CAGE: 10941 — CARVER PUMP COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2A INTERNAL A
connection_stylePLAIN
special_featuresCAP USED ON VALVES THAT DO NOT HAVE CAP THREADS. SCREWS INTO VALVE CORETHREADS
style_designatorCAP, VALVE SEALING
thread_directionRIGHT-HAND INTERNAL
nominal_thread_size0.206 INCHES INTERNAL IN
thread_pitch_diameters+0.1790 TO 0.1820 INCHES INTERNAL IN
thread_quantity_per_inch36 INTERNAL
thread_series_designatorUNS INTERNAL
NSN5305-00-292-4986
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 653B · 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 DIRECTION: RIGHT-HAND
THREAD CLASS: 3A A
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
MATERIAL: STEEL OVERALL
THREAD SERIES DESIGNATOR: UNF
HEAD HEIGHT: 0.319 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
THREAD LENGTH: 1.125 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.438 INCHES IN
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
HEAD HEIGHT0.319 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
FASTENER LENGTH2.500 INCHES NOMINAL IN
THREAD LENGTH1.125 INCHES MINIMUM IN
THREAD QUANTITY PER INCH20
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
111221PC455Interchangeable
interchangeable cross-reference
interchangeable
50BInterchangeable
interchangeable cross-reference
interchangeable
4923Interchangeable
interchangeable cross-reference
interchangeable
653BInterchangeable
interchangeable cross-reference
interchangeable
910983-1Interchangeable
interchangeable cross-reference
interchangeable
425020-50BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 653B?
653B is a CAP,PNEUMATIC VALVE.
What parts can replace 653B?
There are 10 known substitutes for 653B: 111221PC455, 50B, 4923 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 653B?
653B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-292-4986. This indicates validated use in U.S. government and defense supply chains.
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