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C7111 — Technical Data Sheet

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— · 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

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, material: PAPER FILTERING MEDIUM, design_type: LIMITED, body_diameter: 6.060 INCHES NOMINAL IN, overall_length: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System 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
C7111
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
materialPAPER FILTERING MEDIUM
design_typeLIMITED
body_diameter6.060 INCHES NOMINAL IN
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_designatorCYLINDRICAL W/CLOSED ENDS
undercut_diameter0.188 INCHES NOMINAL IN
NSN5315-00-598-7953
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: C7111 · 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
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 16
DT221InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
101053InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AFP54InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6001-002578InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C27648-2PC1616InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
C27648-2PC16InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C7111?
C7111 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace C7111?
There are 16 known substitutes for C7111: DT221, 101053, AFP54 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C7111?
C7111 is cataloged in the Federal Logistics Information System 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: September 2026