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520661 — NOZZLE DIAPHRAGM,TURBINE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

520661: NOZZLE DIAPHRAGM,TURBINE.

The NOZZLE DIAPHRAGM,TURBINE is a the manufacturer industrial component. Key specifications include overall_width: 1.690 INCHES NOMINAL IN, overall_height: 0.125 INCHES NOMINAL IN, overall_length: 2.950 INCHES NOMINAL IN, precious_material_and_location: CONTACT SURFACES GOLD, part_name_assigned_by_controlling_agency: CIRCUIT BOARD,CONTACT. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-281-1006, 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
MRO→ MRO_GENERAL→ 520661
NSN: 5306-00-281-1006
NIINs: 002811006, 009692916, 011676169
FSC: 5306 — Bolts
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
overall_width1.690 INCHES NOMINAL IN
overall_height0.125 INCHES NOMINAL IN
overall_length2.950 INCHES NOMINAL IN
precious_material_and_locationCONTACT SURFACES GOLD
part_name_assigned_by_controlling_agencyCIRCUIT BOARD,CONTACT
NSN5306-00-281-1006
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 520661 · 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
•
HEAD HEIGHT: 0.280 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.070 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.820 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
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HOLE CONFIGURATION STYLE: HEXAGON LONGITUDINAL HOLE
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MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.280 INCHES NOMINAL IN
FASTENER LENGTH1.070 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
THREAD LENGTH0.820 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
HOLE CONFIGURATION STYLEHEXAGON LONGITUDINAL HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
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 520661?
520661 is a NOZZLE DIAPHRAGM,TURBINE. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 520661?
520661 is cataloged in the U.S. Government catalog under NSN 5306-00-281-1006. 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.