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Technical Data Sheet
PartsTable / MRO / 254-1
254-1 ✓ Verified by PartsTable
Melissa & Doug · MRO · MRO_GENERAL
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

Match these wooden puzzle pairs to make mastering letters and their sounds as easy as A, B, C. The puzzles are self-correcting--each piece has only one match that fits--so children can play independently and learn at the same time. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-045-4007, 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
MRO→ MRO_GENERAL→ 254-1
NSN: 5310-00-045-4007
FSC: 5310
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
phaseTHREE LOCATION NOT OTHERWISE SPECIFIED
end_typeGLAND NUT W/INTERNAL THREAD FIRST END
materialPLASTIC DIALLYL PHTHALATE AND GLASS FIBER BOARD
end_styleSHORT LOOP BOTH ENDS
body_styleSTRAIGHT SHAPE, EXTERNAL/INTERNAL COUPLING
head_styleROUND
shell_typeSOLID
action_typeGRAVITY
design_typeCLOSED
hook_radius0.0625 INCHES NOMINAL BOTH ENDS IN
input_phaseTHREE LOCATION NOT OTHERWISE SPECIFIED
load_rating0.688 POUNDS NOMINAL LBS
NSN5310-00-045-4007
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 254-1 · Melissa & Doug ⚠ 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
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD ALL MATERIAL RESPONSES OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
END ITEM IDENTIFICATIONMRAP - M-ATV WITH CS13 POP AND SNE; ARMORED MULTI-PURPOSE VEHICLE (AMPV)
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.250 INCHES MAXIMUM IN
MATERIAL THICKNESS0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
700-0308Interchangeable
interchangeable cross-reference
interchangeable
008010-1Interchangeable
interchangeable cross-reference
interchangeable
40704-1Interchangeable
interchangeable cross-reference
interchangeable
99018-11Interchangeable
interchangeable cross-reference
interchangeable
AP465Interchangeable
interchangeable cross-reference
interchangeable
83004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 254-1?
254-1 is a SOCKET,PLUG-IN ELECTRONIC COMPON manufactured by Melissa & Doug. It is classified as a MRO (MRO_GENERAL).
What parts can replace 254-1?
There are 34 known substitutes for 254-1: 700-0308, 008010-1, 40704-1 and 31 more. Substitute compatibility should be verified for your specific system.
Is 254-1 still available?
254-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026