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AN20 — REDUCER,TUBE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AN20: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include special_features: DESIGNED FOR INTESTINAL INTUBATION AND VACUUM ASPIRATION OF PATIENTS WITH ILEUS AND HYPOACTIVE BOWEL SOUNDS, design_designation: INTUBATION, catheter_nominal_length: 16.000 FRENCH. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-185-6375, 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
AN20
NSN: 5310-00-185-6375
NIINs: 001856375, 002649171, 004582295, 013005022, 015590649
FSC: 5310 — Nuts and Washers
CAGE: 43991 — FAG BEARINGS CORPORATION (USA)
SPECIFICATIONS
special_featuresDESIGNED FOR INTESTINAL INTUBATION AND VACUUM ASPIRATION OF PATIENTS WITH ILEUS AND HYPOACTIVE BOWEL SOUNDS
design_designationINTUBATION
catheter_nominal_length16.000 FRENCH
NSN5310-00-185-6375
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN20 · 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 SERIES: UNS
•
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
•
THREAD PITCH DIAMETERS: +3.8639 TO 3.8713 INCHES IN
•
DRIVE POINT WIDTH: 0.375 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 3.918 INCHES IN
•
NUT DIAMETER: 5.1875 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.1563 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD PITCH DIAMETERS+3.8639 TO 3.8713 INCHES IN
DRIVE POINT WIDTH0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE3.918 INCHES IN
NUT DIAMETER5.1875 INCHES NOMINAL IN
DRIVE POINT DEPTH0.1563 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 CLASS
NUT THICKNESS0.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 5
72-6971-320Reference document
Same NSN cross-reference
Reference document — Secondary reference
WW9481225PC82Reference document
Same NSN cross-reference
Reference document — Secondary reference
12Z335-27Reference document
Same NSN cross-reference
Reference document — Secondary reference
1X96Reference document
Same NSN cross-reference
Reference document — Secondary reference
HR6660Reference 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 AN20?
AN20 is a REDUCER,TUBE.
What parts can replace AN20?
There are 5 known substitutes for AN20: 72-6971-320, WW9481225PC82, 12Z335-27 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN20?
AN20 is cataloged in the U.S. Government catalog under NSN 5310-00-185-6375. 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.