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PartsTable / COMPONENT / NASM51861-37
NASM51861-37 ✓ 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 OR STEEL COMP 420 OVERALL, head_style: PAN, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, fastener_length: 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN, features_provided: CASEHARDENED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-926-5611, 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
NASM51861-37
NSN: 5305-00-926-5611
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 OR STEEL COMP 420 OVERALL
head_stylePAN
head_height0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
head_diameter0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
fastener_length1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
features_providedCASEHARDENED
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nonmachine_thread_styleDOG TYPE (TYPE B OR C)
nondefinitive_spec/std_dataB TYPE
nonmachine_nominal_thread_diameter0.164 INCHES IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5305-00-926-5611
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NASM51861-37 · 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 TREATMENT: PASSIVATE OVERALL
•
FEATURES PROVIDED: CASEHARDENED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NONDEFINITIVE SPEC/STD DATA: B TYPE
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: PAN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
HEAD HEIGHT: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
FEATURES PROVIDEDCASEHARDENED
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NONDEFINITIVE SPEC/STD DATAB TYPE
NONMACHINE NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEPAN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD HEIGHT0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
FASTENER LENGTH1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
NONMACHINE THREAD STYLEDOG TYPE (TYPE B OR C)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
13230E6749-37Interchangeable
interchangeable cross-reference
interchangeable
MS51861Interchangeable
interchangeable cross-reference
interchangeable
5305004324172Interchangeable
interchangeable cross-reference
interchangeable
MS51861-37Interchangeable
Same NIIN cross-reference
interchangeable
MS24622-37Interchangeable
Same NIIN cross-reference
interchangeable
5305009265611Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NASM51861-37?
NASM51861-37 is a SCREW,TAPPING.
What parts can replace NASM51861-37?
There are 6 known substitutes for NASM51861-37: 13230E6749-37, MS51861, 5305004324172 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NASM51861-37?
NASM51861-37 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-926-5611. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026