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PartsTable / COMPONENT / 175123
175123 ✓ Verified by PartsTable
Hama · 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 VACU-DISC HOLDER is a Hama industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.220 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, thread_length: 0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, fastener_length: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-022-6779, 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
175123
NSN: 5305-00-022-6779
FSC: 5305
CAGE: 98343 — MIDLAND BRAKE INC DIV OF ECHLIN INC (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.220 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
thread_length0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
screw_materialSTEEL COMP 1010 OR STEEL COMP M1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
fastener_length0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.125 INCHES IN
screw_surface_treatmentCADMIUM OR ZINC
thread_quantity_per_inch40
NSN5305-00-022-6779
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 175123 · Hama ⚠ 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
•
SCREW MATERIAL: STEEL COMP 1010 OR STEEL COMP M1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
•
FASTENER LENGTH: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD DIAMETER: 0.220 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.125 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES
•
SCREW 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
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALSTEEL COMP 1010 OR STEEL COMP M1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
FASTENER LENGTH0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
HEAD DIAMETER0.220 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.125 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES
SCREW 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
THREAD QUANTITY PER INCH40
THREAD LENGTH0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
RN54Interchangeable
interchangeable cross-reference
interchangeable
B107.38Interchangeable
interchangeable cross-reference
interchangeable
GGG-P-471 TY10Interchangeable
interchangeable cross-reference
interchangeable
21-402Interchangeable
interchangeable cross-reference
interchangeable
D-382-SInterchangeable
interchangeable cross-reference
interchangeable
8325Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 175123?
175123 is a VACU-DISC HOLDER manufactured by Hama.
What parts can replace 175123?
There are 16 known substitutes for 175123: RN54, B107.38, GGG-P-471 TY10 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 175123?
175123 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-022-6779. 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