PartsTable
Technical Data Sheet
P4-18 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL COMP 1212 OVERALL, body_style: THRU-HOLE MOUNT, nut_height: 0.234 INCHES NOMINAL IN, shell_type: SOLID, thread_class: 2B, terminal_type: SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-3244, 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
P4-18
NSN: 5310-00-050-3244
FSC: 5310
CAGE: 22888 — FMC CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OVERALL
body_styleTHRU-HOLE MOUNT
nut_height0.234 INCHES NOMINAL IN
shell_typeSOLID
thread_class2B
terminal_typeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_length1.079 INCHES NOMINAL IN
shell_materialZINC
insert_materialPLASTIC PHENOLIC SINGLE MATING END
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
bushing_diameter1.125 INCHES NOMINAL IN
NSN5310-00-050-3244
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P4-18 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
NUT HEIGHT: 0.234 INCHES NOMINAL IN
MATERIAL: STEEL COMP 1212 OVERALL
NOMINAL THREAD SIZE: 0.164 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 32
THREAD CLASS: 2B
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS: 0.344 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.234 INCHES NOMINAL IN
MATERIALSTEEL COMP 1212 OVERALL
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
THREAD CLASS2B
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS0.344 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
P4-18Interchangeable
interchangeable cross-reference
interchangeable
150200-0261Interchangeable
interchangeable cross-reference
interchangeable
B180260G3Interchangeable
interchangeable cross-reference
interchangeable
800075Interchangeable
interchangeable cross-reference
interchangeable
5164312Interchangeable
interchangeable cross-reference
interchangeable
8333154Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P4-18?
P4-18 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace P4-18?
There are 16 known substitutes for P4-18: P4-18, 150200-0261, B180260G3 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P4-18?
P4-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-3244. This indicates validated use in U.S. government and defense supply chains.
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