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PartsTable / COMPONENT / 18-4634
18-4634 ✓ 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

The SLEEVE,HYDRAULIC PU is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 OVERALL, nut_style: HEXAGON, nut_height: 0.375 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNS, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-496-4888, 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
18-4634
NSN: 5310-00-496-4888
FSC: 5310
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OVERALL
nut_styleHEXAGON
nut_height0.375 INCHES NOMINAL IN
thread_class2B
thread_seriesUNS
thread_directionRIGHT-HAND
width_across_flats1.875 INCHES NOMINAL IN
nominal_thread_size1.312 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch20
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-496-4888
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 18-4634 · 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
•
NOMINAL THREAD SIZE: 1.312 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNS
•
NUT HEIGHT: 0.375 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1212 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.312 INCHES IN
THREAD QUANTITY PER INCH20
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNS
NUT HEIGHT0.375 INCHES NOMINAL IN
NUT STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1212 OVERALL
WIDTH ACROSS FLATS1.875 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
37924Interchangeable
interchangeable cross-reference
interchangeable
H300F11-4Interchangeable
interchangeable cross-reference
interchangeable
H-300F-1 1/4Interchangeable
interchangeable cross-reference
interchangeable
3435A4PC78Interchangeable
interchangeable cross-reference
interchangeable
4634Interchangeable
interchangeable cross-reference
interchangeable
184634Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18-4634?
18-4634 is a SLEEVE,HYDRAULIC PU.
What parts can replace 18-4634?
There are 21 known substitutes for 18-4634: 37924, H300F11-4, H-300F-1 1/4 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-4634?
18-4634 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-496-4888. 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