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74566 — TUBING,NONMETALLIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74566: TUBING,NONMETALLIC.

The TUBING,NONMETALLIC is a the manufacturer industrial component. Key specifications include inside_surface_condition: SMOOTH, measuring_method_and_length: 180.000 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-145-7216, 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
74566
NSN: 5310-00-145-7216
NIINs: 001457216, 006397124, 011235708
FSC: 5310 — Nuts and Washers
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
inside_surface_conditionSMOOTH
measuring_method_and_length180.000 INCHES NOMINAL OVERALL IN
NSN5310-00-145-7216
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74566 · 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: 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
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HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 0.625 INCHES IN
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NUT HEIGHT: 0.420 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
•
SURFACE TREATMENT: LEAD OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
THREAD SERIESUNF
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.625 INCHES IN
NUT HEIGHT0.420 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
SURFACE TREATMENTLEAD OVERALL
NUT STYLECASTELLATED, HEXAGON
THREAD CLASS3B
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74566?
74566 is a TUBING,NONMETALLIC.
What is the NSN for 74566?
74566 is cataloged in the U.S. Government catalog under NSN 5310-00-145-7216. 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.