PartsTable
Technical Data Sheet
D2506 ✓ 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 RESISTOR,FIXED,COMPOSITION is a the manufacturer industrial component. Key specifications include color: BLUE, material: RUBBER AND PLASTIC POLYAMIDE NYLON, nut_style: SLOTTED, HEXAGON, nut_height: 1.245 INCHES MINIMUM AND 2.175 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-266-0490, 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
D2506
NSN: 5310-00-266-0490
FSC: 5310
CAGE: 59690 — KOEHRING CO LORAIN DIV (USA)
SPECIFICATIONS
colorBLUE
materialRUBBER AND PLASTIC POLYAMIDE NYLON
nut_styleSLOTTED, HEXAGON
nut_height1.245 INCHES MINIMUM AND 2.175 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
special_features3/4" NPT, METAL BOWL WITH SIGHT GAUGE
style_designatorFLAT
thread_directionRIGHT-HAND
width_across_flats2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
nominal_thread_size1.500 INCHES IN
bearing_surface_typeWASHER FACED
NSN5310-00-266-0490
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D2506 · 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 CLASS: 2B
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE: 1.500 INCHES IN
THREAD QUANTITY PER INCH: 6
BEARING SURFACE TYPE: WASHER FACED
MATERIAL: STEEL COMP 1020 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT: 1.245 INCHES MINIMUM AND 2.175 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE1.500 INCHES IN
THREAD QUANTITY PER INCH6
BEARING SURFACE TYPEWASHER FACED
MATERIALSTEEL COMP 1020 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT1.245 INCHES MINIMUM AND 2.175 INCHES MAXIMUM IN
WIDTH ACROSS FLATS2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
NUT STYLESLOTTED, HEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
M62-23Interchangeable
interchangeable cross-reference
interchangeable
L15170Interchangeable
interchangeable cross-reference
interchangeable
7580K6Interchangeable
interchangeable cross-reference
interchangeable
D-2506Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D2506?
D2506 is a RESISTOR,FIXED,COMPOSITION.
What parts can replace D2506?
There are 4 known substitutes for D2506: M62-23, L15170, 7580K6 and 1 more. Substitute compatibility should be verified for your specific system.
Is D2506 still available?
D2506 is currently cancelled.
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