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7550044 — BALLSCREW ASSEMBLY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7550044: BALLSCREW ASSEMBLY.

The BALLSCREW ASSEMBLY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, hole_diameter: 0.211 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN, outside_diameter: 5.300 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.375 INCHES NOMINAL IN, bolt_circle_diameter: 4.244 INCHES MINIMUM AND 4.256 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-082-8439, 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
7550044
NSN: 5305-00-082-8439
NIINs: 000828439, 005141591, 017186730
FSC: 5305 — Screws
CAGE: 82340 — L3HARRIS TECHNOLOGIES, INC. DIV SPACE AND AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
hole_diameter0.211 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN
outside_diameter5.300 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.375 INCHES NOMINAL IN
bolt_hole_quantity2
bolt_circle_diameter4.244 INCHES MINIMUM AND 4.256 INCHES MAXIMUM IN
fsc_application_dataPROPELLER AIRCRAFT
material_document_and_classificationHS500 TY 4 MFR REF SINGLE MATERIAL RESPONSE
NSN5305-00-082-8439
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7550044 · 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: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OR AISI ASSN STD ALL MATERIAL RESPONSES
•
THREAD LENGTH: 0.657 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
FEATURES PROVIDED: O RING
•
HEAD STYLE: WATERTIGHT
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OR AISI ASSN STD ALL MATERIAL RESPONSES
THREAD LENGTH0.657 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
FEATURES PROVIDEDO RING
HEAD STYLEWATERTIGHT
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 304 OR STEEL COMP 305
SUBSTITUTES & CROSS-REFERENCES 10
293-48C1-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS3212-18Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SEELSKREWR6-32X3-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
R6-32X3-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
HT06R32S12Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SC5305-0032-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 7550044?
7550044 is a BALLSCREW ASSEMBLY.
What parts can replace 7550044?
There are 10 known substitutes for 7550044: 293-48C1-8, MS3212-18, SEELSKREWR6-32X3-4 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7550044?
7550044 is cataloged in the U.S. Government catalog under NSN 5305-00-082-8439. 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.