PartsTable
Technical Data Sheet
2633-561-01 PC 24-4L1 ✓ 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 NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY AND PLASTIC POLYAMIDE NYLON NUT, nut_style: HEXAGON, nut_height: 0.875 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-088-5327, 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
2633-561-01 PC 24-4L1
NSN: 5310-00-088-5327
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY AND PLASTIC POLYAMIDE NYLON NUT
nut_styleHEXAGON
nut_height0.875 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
width_across_flats1.053 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch10
criticality_code_justificationZZZX
NSN5310-00-088-5327
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2633-561-01 PC 24-4L1 · 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
THREAD DIRECTION: RIGHT-HAND
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD CLASS: 3B
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE: 0.750 INCHES IN
BEARING SURFACE TYPE: WASHER FACED
THREAD QUANTITY PER INCH: 10
CRITICALITY CODE JUSTIFICATION: ZZZX
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD CLASS3B
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.750 INCHES IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH10
CRITICALITY CODE JUSTIFICATIONZZZX
DEPARTURE FROM CITED DESIGNATORMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
MATERIALNICKEL ALLOY AND PLASTIC POLYAMIDE NYLON NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
1504-50 PIECE 7Interchangeable
interchangeable cross-reference
interchangeable
MS17828-120Interchangeable
interchangeable cross-reference
interchangeable
751-6402402 ITEM 9Interchangeable
interchangeable cross-reference
interchangeable
TY IV,GR500,3/4-10UNC-2AX5 1/4L1Interchangeable
interchangeable cross-reference
interchangeable
SS580-845-1930038PC10Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 GR500(QQ-N-286)L1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2633-561-01 PC 24-4L1?
2633-561-01 PC 24-4L1 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 2633-561-01 PC 24-4L1?
There are 33 known substitutes for 2633-561-01 PC 24-4L1: 1504-50 PIECE 7, MS17828-120, 751-6402402 ITEM 9 and 30 more. Substitute compatibility should be verified for your specific system.
Is 2633-561-01 PC 24-4L1 still available?
2633-561-01 PC 24-4L1 is currently cancelled.
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