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521349 — PIPE,INTAKE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

521349: PIPE,INTAKE.

The PIPE,INTAKE is a the manufacturer industrial component. Key specifications include end_item_identification: ACFT ENG,RECIPROCATING, general_characteristics_item_description: CONSISTS OF PART NUMBERS AS89965,AS37611 AND AS41771; OVERALL LENGTH 13.178 IN. MIN AND 13.258 IN.

MAX IN. This part is cataloged in the U.S. Government catalog under NSN 5306-00-588-7690, 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
521349
NSN: 5306-00-588-7690
NIINs: 005887690, 007591883
FSC: 5306 — Bolts
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
end_item_identificationACFT ENG,RECIPROCATING
general_characteristics_item_descriptionCONSISTS OF PART NUMBERS AS89965,AS37611 AND AS41771; OVERALL LENGTH 13.178 IN. MIN AND 13.258 IN. MAX IN
NSN5306-00-588-7690
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 521349 · OEM ⚠ 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
•
SURFACE FINISH: 63.0 MICROINCHES BEARING SURFACE OF HEAD
•
HEAD HEIGHT: 0.280 INCHES NOMINAL IN
•
FASTENER LENGTH: 4.950 INCHES MINIMUM AND 4.980 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.890 INCHES MINIMUM AND 0.980 INCHES MAXIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.068 INCHES NOMINAL FIRST HOLE IN
•
HOLE CONFIGURATION STYLE: HEXAGON FLATS
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.280 INCHES NOMINAL IN
FASTENER LENGTH4.950 INCHES MINIMUM AND 4.980 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH0.890 INCHES MINIMUM AND 0.980 INCHES MAXIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.068 INCHES NOMINAL FIRST HOLE IN
HOLE CONFIGURATION STYLEHEXAGON FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
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 521349?
521349 is a PIPE,INTAKE.
What is the NSN for 521349?
521349 is cataloged in the U.S. Government catalog under NSN 5306-00-588-7690. This indicates validated use in U.S. government and defense supply chains.
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