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Technical Data Sheet
PartsTable / COMPONENT / C27648-2PC1616
C27648-2PC1616 ✓ 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 PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, material: STEEL COMP 4140 OVERALL, overall_length: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER, undercut_width: 0.063 INCHES NOMINAL IN, first_end_style: SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-598-7953, 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
C27648-2PC1616
NSN: 5315-00-598-7953
FSC: 5315
CAGE: 53698 — SOMERSET ENGINEERING DIV MIDLAND-ROSS CORP (USA)
SPECIFICATIONS
diameter0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
materialSTEEL COMP 4140 OVERALL
overall_length0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER
undercut_width0.063 INCHES NOMINAL IN
first_end_styleSQUARE
hardness_rating26.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
effective_length0.250 INCHES NOMINAL IN
style_designatorGROOVE
undercut_diameter0.188 INCHES NOMINAL IN
first_end_locationBOTH ENDS
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-598-7953
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: C27648-2PC1616 · 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
•
FIRST END LOCATION: BOTH ENDS
•
UNDERCUT DIAMETER: 0.188 INCHES NOMINAL IN
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER
•
MATERIAL: STEEL COMP 4140 OVERALL
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
STYLE DESIGNATOR: GROOVE
•
FIRST END STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END LOCATIONBOTH ENDS
UNDERCUT DIAMETER0.188 INCHES NOMINAL IN
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER
MATERIALSTEEL COMP 4140 OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
STYLE DESIGNATORGROOVE
FIRST END STYLESQUARE
DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
EFFECTIVE LENGTH0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
DT221Interchangeable
interchangeable cross-reference
interchangeable
101053Interchangeable
interchangeable cross-reference
interchangeable
AFP54Interchangeable
interchangeable cross-reference
interchangeable
C711/1Interchangeable
interchangeable cross-reference
interchangeable
6001-002578Interchangeable
interchangeable cross-reference
interchangeable
C7111Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C27648-2PC1616?
C27648-2PC1616 is a PIN,GROOVED,HEADLESS.
What parts can replace C27648-2PC1616?
There are 7 known substitutes for C27648-2PC1616: DT221, 101053, AFP54 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C27648-2PC1616?
C27648-2PC1616 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-598-7953. 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