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21725 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
Clementoni · BOLT SCREW
PRODUCT OVERVIEW

21725: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a Clementoni industrial component. Key specifications include guide: NOT INCLUDED, diameter: 0.438 INCHES NOMINAL IN, material: STEEL LOCATION NOT OTHERWISE SPECIFIED, flute_type: INTEGRAL, head_style: FILLISTER, shank_type: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-958-8350, 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
21725
NSN: 5305-00-958-8350
NIINs: 009588350, 010474288, 010755594, 014542812, 015180835, 015384937, 015969170
FSC: 5305 — Screws
CAGE: 81579 — MASON ELECTRIC CO. DBA MASON CONTROLS (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.438 INCHES NOMINAL IN
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
flute_typeINTEGRAL
head_styleFILLISTER
shank_typeSTRAIGHT
head_height0.170 INCHES NOMINAL IN
reamer_typeFLUTED CHUCKING
flute_designHELICAL
flute_length1.750 INCHES NOMINAL IN
thread_class2A A
head_diameter0.414 INCHES NOMINAL IN
NSN5305-00-958-8350
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21725 · Clementoni ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.170 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.170 INCHES NOMINAL IN
FASTENER LENGTH1.875 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD QUANTITY PER INCH28
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21725?
21725 is a TRANSFORMER,AUDIO FREQUENCY manufactured by Clementoni.
What is the NSN for 21725?
21725 is cataloged in the U.S. Government catalog under NSN 5305-00-958-8350. 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.