Close Tolerance Bolt

A51H10634-13

A51H10634-13
(NSN) National Stock Number
5306-00-003-9034
Federal Supply Classification
5306 Bolts
Item Name Code
27851
Schedule B Code
8109900000
Summary

3a thread class, right-hand thread direction, 0.848 inches minimum and 0.898 inches maximum thread length, double hexagon w/hole head style, 0.608 inches minimum and 0.628 inches maximum head height, 0.682 inches minimum and 0.691 inches maximum width between flats

DAC HCC DMIL RNCC
1 - - 5
RNVC SADC MSDS RNAAC
2 - - ZZ
Identification

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

INC FIIG Concept Condition
27851 A003B0 - 1
Specifications
Thread Class
3a
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Direction
right-hand
Details The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
Thread Length
0.848 inches minimum and 0.898 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Head Style
double hexagon w/hole
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Height
0.608 inches minimum and 0.628 inches maximum
Details A measurement from the bottom to the top of the head,in distinction from depth.
Width Between Flats
0.682 inches minimum and 0.691 inches maximum
Details None.
Extended Washer Diameter
1.040 inches minimum and 1.050 inches maximum
Details None.
Extended Washer Thickness
0.140 inches minimum and 0.160 inches maximum
Details None.
Shank Unthreaded Hole Diameter
0.141 inches minimum and 0.151 inches maximum first hole
Details The length of a straight line which passes through the center of the shank unthreaded hole,and terminates at the inside circumference.
Nominal Thread Diameter
0.625 inches
Details The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
Grip Length
1.865 inches minimum and 1.885 inches maximum
Details A measurement of the longest dimension of the grip,in distinction from width.
Thread Quantity Per Inch
18
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Distance From Head Largest Bearing Surface To Shank Hole Center
2.218 inches nominal first hole
Details The distance from the shank hole centerline to the largest bearing surface of the head.
Surface Finish
16.0 microinches head
Details Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
Surface Finish
16.0 microinches threads
Details Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
Part Name Assigned By Controlling Agency
navy special project
Details The name assigned to the item by the government agency or commercial organization controlling the design of the item.
Material
titanium alloy overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
nas621 comp 6al-4v assn std single material response overall
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Thread Series Designator
unf
Details A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
A51H10634-13 61174 1 - 5 9 - ZZ
A51H10634-13 26512 1 - 3 9 - ZZ
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A A -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
48950 - W -
RVC WCC TCC SHC
- 573 Z 9
Price and Availability Quote

Send us a quick request for quote using the form below:

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

  • Genuine Manufacturers Parts
  • 100% Product Inspection
  • 7 Year Sales Record Retention
  • Fast On-Time Delivery
  • HAZMAT Certified
  • Global Shipping
Manufacturer
NORTHROP GRUMMAN SYSTEMS CORPORATION
CAGE: 79RG9
JACKSONVILLE , FL , 32221-8130
UNITED STATES
View Products
FAQs
Frequently asked questions for NSN 5306-00-003-9034
What is the NIIN of the NSN 5306-00-003-9034?
The National Item Identification Number (NIIN) of the NSN 5306-00-003-9034 is 00-003-9034
When the NSN 5306-00-003-9034 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Sat, May 27, 1972
Does the NSN 5306-00-003-9034 contain any precious metals?
Does not contain precious metal
Does the NSN 5306-00-003-9034 contain any hazardous material?
No data in HMIRS
What is the ESD classification of NSN 5306-00-003-9034?
No known electrostatic discharge

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Similar Products
Who we are?

We are a trusted provider of milspec and aerospace hardware, offering high-quality consumables and parts. With a commitment to excellence, we guarantee reliable and fast delivery through our network of logistics centers. Our mission is to support the aerospace industry with precision and efficiency.

Contact
3555 Agricultural Center Dr.
St. Augustine, FL, 32092
United States
© 2025 Aerospace Hardware Store, Inc. All rights reserved.
Made in USA