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Technical Data Sheet
PartsTable / COMPONENT / PQ-37-3
PQ-37-3 ✓ 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 THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: KNURLED NO. 1, head_height: 0.187 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.750 INCHES NOMINAL IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-811-8306, 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
PQ-37-3
NSN: 5305-00-811-8306
FSC: 5305
CAGE: 29440 — W. M. BERG, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleKNURLED NO. 1
head_height0.187 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.750 INCHES NOMINAL IN
thread_length0.812 INCHES MINIMUM IN
fastener_length1.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
NSN5305-00-811-8306
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PQ-37-3 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: OXIDE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL COMP 303 OVERALL
•
THREAD CLASS: 2A A
•
HEAD DIAMETER: 0.750 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.187 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTOXIDE OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL COMP 303 OVERALL
THREAD CLASS2A A
HEAD DIAMETER0.750 INCHES NOMINAL IN
HEAD HEIGHT0.187 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEKNURLED NO. 1
THREAD LENGTH0.812 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
B107.10M TY2CL2ST1Interchangeable
interchangeable cross-reference
interchangeable
4046Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-641 TY4CL4STAInterchangeable
interchangeable cross-reference
interchangeable
13736-600Interchangeable
interchangeable cross-reference
interchangeable
04046Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-80258SZ30X15X12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PQ-37-3?
PQ-37-3 is a THUMBSCREW.
What parts can replace PQ-37-3?
There are 12 known substitutes for PQ-37-3: B107.10M TY2CL2ST1, 4046, GGG-W-641 TY4CL4STA and 9 more. Substitute compatibility should be verified for your specific system.
Is PQ-37-3 still available?
PQ-37-3 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026