330-20 — SHIELD,SONAR TRANSDUCER HEAD

✓ Government record, cited

Trefl · NUT WASHER

PRODUCT OVERVIEW

330-20: SHIELD,SONAR TRANSDUCER HEAD.

The SHIELD,SONAR TRANSDUCER HEAD is a Trefl industrial component. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, body_style: STRAIGHT HANDLE, cone_width: 39.0 MILLIMETERS NOMINAL MM, nut_height: 1.272 INCHES NOMINAL IN, test_media: PLASMA OR SERUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-176-8091, 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

330-20

NSN: 5310-00-176-8091
NIINs: 001768091, 003539741, 004793099, 005811385, 012005822, 013468684, 013719355, 014664154, 015149121, 015382782, 015438841, 016291008
FSC: 5310 — Nuts and Washers
CAGE: 80049 — DEPARTMENT OF THE AIR FORCE (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	CASTELLATED, HEXAGON
body_style	STRAIGHT HANDLE
cone_width	39.0 MILLIMETERS NOMINAL MM
nut_height	1.272 INCHES NOMINAL IN
test_media	PLASMA OR SERUM
body_length	1.000 INCHES NOMINAL IN
finger_type	SPLIT END SINGLE FINGER
thread_class	2B
usage_design	ANEMIA
bore_diameter	100.0 MILLIMETERS NOMINAL MM
finger_length	0.562 INCHES NOMINAL SINGLE FINGER IN
NSN	5310-00-176-8091

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 1.875 INCHES NOMINAL IN

•

THREAD SERIES: UNF

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 1.250 INCHES IN

•

NONDEFINITIVE SPEC/STD DATA: A4 TYPE

•

NUT HEIGHT: 1.272 INCHES NOMINAL IN

•

SURFACE TREATMENT: CADMIUM AND ZINC OVERALL

•

NUT STYLE: CASTELLATED, HEXAGON

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	1.875 INCHES NOMINAL IN
THREAD SERIES	UNF
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	1.250 INCHES IN
NONDEFINITIVE SPEC/STD DATA	A4 TYPE
NUT HEIGHT	1.272 INCHES NOMINAL IN
SURFACE TREATMENT	CADMIUM AND ZINC OVERALL
NUT STYLE	CASTELLATED, HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	12

SUBSTITUTES & CROSS-REFERENCES 2

USAF330-20Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

FFB571TYPEA4Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 330-20?

330-20 is a SHIELD,SONAR TRANSDUCER HEAD manufactured by Trefl.

What parts can replace 330-20?

There are 2 known substitutes for 330-20: USAF330-20, FFB571TYPEA4. Substitute compatibility should be verified for your specific system.

What is the NSN for 330-20?

330-20 is cataloged in the U.S. Government catalog under NSN 5310-00-176-8091. This indicates validated use in U.S. government and defense supply chains.

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330-20 — SHIELD,SONAR TRANSDUCER HEAD

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