PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 2048B
2048B ✓ 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 EXPANDER,TUBE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: WITH ATTACHED HAND TURNING ROD; INSIDE DIA 0.126 IN.; LENGTH 5.000 IN. IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8439, 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
2048B
NSN: 5310-00-021-8439
FSC: 5310
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
general_characteristics_item_descriptionWITH ATTACHED HAND TURNING ROD; INSIDE DIA 0.126 IN.; LENGTH 5.000 IN. IN
NSN5310-00-021-8439
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2048B · 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 STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 14
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH14
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
101026PC725Interchangeable
interchangeable cross-reference
interchangeable
2048BInterchangeable
interchangeable cross-reference
interchangeable
118230PC725Interchangeable
interchangeable cross-reference
interchangeable
P5076Interchangeable
Same NIIN cross-reference
interchangeable
MILB857TYPEAInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2048B?
2048B is a EXPANDER,TUBE.
What parts can replace 2048B?
There are 5 known substitutes for 2048B: 101026PC725, 2048B, 118230PC725 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2048B?
2048B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8439. 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