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Technical Data Sheet
PartsTable / COMPONENT / D2661
D2661 ✓ 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 ADAPTER ASSEMBLY,TRAP is a the manufacturer industrial component. Key specifications include height: 0.312 INCHES NOMINAL IN, diameter: 2.2459 INCHES MINIMUM AND 2.2476 INCHES MAXIMUM IN, material: PLASTIC ACRYLONITRILE-BUTADIENE-STYRENE (ABS) OVERALL, flow_angle: 45.0 DEGREES, head_style: FLAT, leg_length: 0.500 INCHES NOMINAL ALL ENDS 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 5315-00-352-5798, 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
D2661
NSN: 5315-00-352-5798
FSC: 5315
CAGE: 59690 — KOEHRING CO LORAIN DIV (USA)
SPECIFICATIONS
height0.312 INCHES NOMINAL IN
diameter2.2459 INCHES MINIMUM AND 2.2476 INCHES MAXIMUM IN
materialPLASTIC ACRYLONITRILE-BUTADIENE-STYRENE (ABS) OVERALL
flow_angle45.0 DEGREES
head_styleFLAT
leg_length0.500 INCHES NOMINAL ALL ENDS IN
chamfer_length0.500 INCHES NOMINAL IN
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET (PIPE) ALL ENDS
special_features1/16 IN.BEND; BLACK IN
style_designatorSTRAIGHT
pin_chamfer_angle5.0 DEGREES NOMINAL
NSN5315-00-352-5798
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D2661 · 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
•
HEIGHT: 0.312 INCHES NOMINAL IN
•
SECOND HOLE DIAMETER: 0.562 INCHES NOMINAL IN
•
PIN CHAMFER ANGLE: 5.0 DEGREES NOMINAL
•
MATERIAL: STEEL OVERALL
•
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN: 1.688 INCHES NOMINAL IN
•
CHAMFER LENGTH: 0.500 INCHES NOMINAL IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
FIRST HOLE DIAMETER: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEIGHT0.312 INCHES NOMINAL IN
SECOND HOLE DIAMETER0.562 INCHES NOMINAL IN
PIN CHAMFER ANGLE5.0 DEGREES NOMINAL
MATERIALSTEEL OVERALL
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN1.688 INCHES NOMINAL IN
CHAMFER LENGTH0.500 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
FIRST HOLE DIAMETER0.562 INCHES NOMINAL IN
UNDER HEAD LENGTH7.438 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
D2661Interchangeable
interchangeable cross-reference
interchangeable
L552Interchangeable
interchangeable cross-reference
interchangeable
L-P-322 2 IN IPS 1/16 BENDInterchangeable
interchangeable cross-reference
interchangeable
92551Interchangeable
interchangeable cross-reference
interchangeable
L-P-322Interchangeable
interchangeable cross-reference
interchangeable
L551ABSInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D2661?
D2661 is a ADAPTER ASSEMBLY,TRAP.
What parts can replace D2661?
There are 14 known substitutes for D2661: D2661, L552, L-P-322 2 IN IPS 1/16 BEND and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D2661?
D2661 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-352-5798. 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