Shoulder Bolt
BACB30KK8-4
(NSN) National Stock Number
5306-00-401-7978
Federal Supply Classification
5306 Bolts
Item Name Code
04905
Schedule B Code
7318152000
Summary
3a thread class, right-hand thread direction, 0.395 inches minimum thread length, 0.645 inches nominal fastener length, flat chamfer head style, 0.387 inches minimum and 0.412 inches maximum head diameter
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 3 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | 48 |
Identification
An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. For items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. Excludes:thumbscrew.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 04905 | 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
0.395 inches minimum
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Fastener Length
0.645 inches nominal
Details
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.Head Style
flat chamfer
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.Head Diameter
0.387 inches minimum and 0.412 inches maximum
Details
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.Head Height
0.059 inches minimum and 0.069 inches maximum
Details
A measurement from the bottom to the top of the head,in distinction from depth.Shoulder Diameter
0.279 inches minimum first shoulder and 0.280 inches maximum first shoulder
Details
The length of a straight line which passes through the center of the shoulder and terminates at the circumference.Shoulder Length
0.740 inches minimum first shoulder and 0.760 inches maximum first shoulder
Details
The length of the enlarged portion of the shank on the item,in distinction from width or diameter.Nominal Thread Diameter
0.250 inches
Details
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.Thread Quantity Per Inch
28
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Hardness Rating
31.0 rockwell c nominal overall
Details
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.Shoulder Shape
round first shoulder
Details
The physical configuration of the unthreaded portion of a body adjacent to the head which is larger than the diameter of the shank.Material
steel comp 4130 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 8740 overall
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Material Document And Classification
mil-s-6758 mil spec 1st material response overall or mil-s-6050 mil spec 2nd material response overall or mil-s-6098 mil spec 3rd material response overall or mil-s-6049 mil spec 4th 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.Surface Treatment
cadmium overall
Details
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.Thread Series Designator
unjf
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 |
|---|---|---|---|---|---|---|---|
| HL218-8-4 | L4528 | 5 | - | 5 | 2 | - | ZZ |
| BACB30KK8-4 | 17446 | 5 | - | 5 | 2 | - | ZZ |
| HL218-8-4 | 06950 | 5 | - | 5 | 2 | - | ZZ |
| BACB30KK8-4 | 06725 | 5 | - | 5 | 2 | - | ZZ |
| BACB30KK8-4 | 80539 | 5 | - | 5 | 2 | - | ZZ |
| HL218-8-4 | 73197 | 5 | - | 5 | 2 | - | 48 |
| HL218-8-4 | 92215 | 5 | - | 5 | 9 | - | 48 |
| BACB30KK8-4 | 60516 | 5 | - | 5 | 2 | - | ZZ |
| 65960-8-4 | 56878 | 5 | - | 5 | 2 | - | 48 |
| HL218-8-4 | 56878 | 5 | - | 5 | 9 | - | 48 |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | A | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 48950 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 573 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 5306-00-401-7978
What is the NIIN of the NSN 5306-00-401-7978?
The National Item Identification Number (NIIN) of the NSN 5306-00-401-7978 is 00-401-7978
When the NSN 5306-00-401-7978 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Fri, Apr 3, 1970
Does the NSN 5306-00-401-7978 contain any precious metals?
Does not contain precious metal
Does the NSN 5306-00-401-7978 contain any hazardous material?
No data in HMIRS
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