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2D7 — LOUDSPEAKER,ELECTROMAGNETIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2D7: LOUDSPEAKER,ELECTROMAGNETIC.

The LOUDSPEAKER,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: HEXAGON, nut_height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, power_rating: 25.00 WATTS NORMAL, thread_class: 3B, usage_design: INDOOR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-268-6041, 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
2D7
NSN: 5310-00-268-6041
NIINs: 002686041, 009325653, 010521875
FSC: 5310 — Nuts and Washers
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
nut_styleHEXAGON
nut_height0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
power_rating25.00 WATTS NORMAL
thread_class3B
usage_designINDOOR
overall_depth6.125 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
thread_seriesUNF
hardness_rating19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
mounting_methodUNTHREADED HOLE(S)
transducer_typeCONE
NSN5310-00-268-6041
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2D7 · 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
•
WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 63.0 MICROINCHES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNF
•
HARDNESS RATING: 19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
BEARING SURFACE FINISH63.0 MICROINCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNF
HARDNESS RATING19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
AN121504Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
879-027CReference document
Same NSN cross-reference
Reference document — Secondary reference
2441Reference document
Same NSN cross-reference
Reference document — Secondary reference
4381Reference document
Same NSN cross-reference
Reference document — Secondary reference
8735630Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2D7?
2D7 is a LOUDSPEAKER,ELECTROMAGNETIC.
What parts can replace 2D7?
There are 5 known substitutes for 2D7: AN121504, 879-027C, 2441 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2D7?
2D7 is cataloged in the U.S. Government catalog under NSN 5310-00-268-6041. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.