PartsTable
Technical Data Sheet
MS51861-1C ✓ Verified by PartsTable
· BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, head_style: ROUND, head_height: 0.069 INCHES MAXIMUM IN, head_diameter: 0.146 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN, fastener_length: 0.188 INCHES NOMINAL IN, internal_drive_style: CROSS RECESS TYPE 1. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-147-3222, 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
MS51861-1C
NSN: 5305-00-147-3222
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
head_styleROUND
head_height0.069 INCHES MAXIMUM IN
head_diameter0.146 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN
fastener_length0.188 INCHES NOMINAL IN
internal_drive_styleCROSS RECESS TYPE 1
nonmachine_thread_styleWIDE FLUTE (TYPE H OR BT)
minimum_tensile_strength90000 POUNDS PER SQUARE INCH LBS
nonmachine_nominal_thread_diameter0.086 INCHES IN
NSN5305-00-147-3222
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51861-1C · 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 DIAMETER: 0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
SURFACE TREATMENT: PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL: STEEL COMP 410 OVERALL
NONDEFINITIVE SPEC/STD DATA: AB TYPE
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
HEAD HEIGHT: 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL COMP 410 OVERALL
NONDEFINITIVE SPEC/STD DATAAB TYPE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD HEIGHT0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
HEAD STYLEPAN
FASTENER LENGTH0.157 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
100A032763Interchangeable
interchangeable cross-reference
interchangeable
MS51861-1CInterchangeable
interchangeable cross-reference
interchangeable
FF-S-107Interchangeable
interchangeable cross-reference
interchangeable
MS24622-2Interchangeable
Same NIIN cross-reference
interchangeable
10125001Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51861-1C?
MS51861-1C is a SCREW,TAPPING.
What parts can replace MS51861-1C?
There are 5 known substitutes for MS51861-1C: 100A032763, MS51861-1C, FF-S-107 and 2 more. Substitute compatibility should be verified for your specific system.
Is MS51861-1C still available?
MS51861-1C is currently cancelled.
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