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Ball Plungers Hex Socket Head Cap Screw

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Volume Discount

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Part Number

Configured Part Number is shown.

Drawing/Specifications
Part Numbers

Product Overview

Ball Plungers Hex Head Cap Screw

♢ Ball plungers, also known as ball point set screws, ball screws, positioning balls, touch balls, steel ball tightening spring screws, etc., can be used for temporary positioning and index adjustment of workpieces, relying on the spring to push out the front ball through a fixed stroke.
♢This series features a bolt-like design for easy tip positioning.

Dimensional Drawing

Hex Socket Bolt Type
Dimensional Drawing

Specification Table

Specification Table

Part Number		L Selection							d	S	B₁	A	E	ℓ	Load (N)
Type	M (Coarse Thread)														Load (N)
Type	M (Coarse Thread)														min.	max.
E-LBPRL E-LBPRH	4	10	15	20		30			2.5	0.8	3	7	4	2	3.9	9.8
	5		15	20		30	40		3		4	8.5	5	2.5	4.9	19.6
	6		15	20		30	40		3		5	10	6	3	9.8	29.4
	8		15	20		30	40		4	1	6	13	8	4	12.7	39.2
	10		15	20		30	40	50	5	1.2	8	16	10	5	18.6	49
	12				25	30	40		7.1	1.8	10	18	12	6	19.6	58.8
	16						40		9.5	2.5	14	24	16	8	29.4	98

Material Specification

Type	Body		Ball		Spring
Type	Material	Surface Treatment	Material	Hardness	Material
E-LBPRL	40Cr	Black Oxide	SUJ2	55HRC~	SUS304
E-LBPRH	SUS304	-	SUS440C	55HRC~	SUS304

Product Features

♢Bolt-like design, divided into hex socket type and hex head type.
♢Load available in both light load and heavy load, and surface treatment available in electroless nickel plating and iron tetraoxide protective film.
♢Same thread size available in multiple lengths for selection.
♢ The ball plunger has a simple structure: the front ball is pushed out through a fixed stroke by the internal spring and it can be released by pressing in the ball against the elastic force.

Example of Use

: 30; 45; 60

Part Number
E-LBPRL4-10
E-LBPRL4-15
E-LBPRL4-20
E-LBPRL4-30
E-LBPRL5-15
E-LBPRL5-20
E-LBPRL5-30
E-LBPRL5-40
E-LBPRL6-15
E-LBPRL6-20
E-LBPRL6-30
E-LBPRL6-40
E-LBPRL8-15
E-LBPRL8-20
E-LBPRL8-30
E-LBPRL8-40
E-LBPRL10-15
E-LBPRL10-20
E-LBPRL10-30
E-LBPRL10-40
E-LBPRL10-50
E-LBPRL12-25
E-LBPRL12-30
E-LBPRL12-40
E-LBPRL16-40

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Outer Dia. M (mm)	Stroke (S) (mm)	Ball Material	Main Body Surface Treatment	Initial Load (N)	Max. Load (N)	Length L (mm)
MYR 9.70	1 Piece(s)	Available	1 Day(s)	4	0.8	[Steel] Steel	Black Oxide	3.9	9.8	10
MYR 9.82	1 Piece(s)	Available	6 Day(s)	4	0.8	[Steel] Steel	Black Oxide	3.9	9.8	15
MYR 9.92	1 Piece(s)	Available	6 Day(s)	4	0.8	[Steel] Steel	Black Oxide	3.9	9.8	20
MYR 10.08	1 Piece(s)	Available	6 Day(s)	4	0.8	[Steel] Steel	Black Oxide	3.9	9.8	30
MYR 9.82	1 Piece(s)	Available	6 Day(s)	5	0.8	[Steel] Steel	Black Oxide	4.9	19.6	15
MYR 9.92	1 Piece(s)	Available	6 Day(s)	5	0.8	[Steel] Steel	Black Oxide	4.9	19.6	20
MYR 10.08	1 Piece(s)	Available	6 Day(s)	5	0.8	[Steel] Steel	Black Oxide	4.9	19.6	30
MYR 10.90	1 Piece(s)	Available	6 Day(s)	5	0.8	[Steel] Steel	Black Oxide	4.9	19.6	40
MYR 9.82	1 Piece(s)	Available	6 Day(s)	6	0.8	[Steel] Steel	Black Oxide	9.8	29.2	15
MYR 9.92	1 Piece(s)	Available	6 Day(s)	6	0.8	[Steel] Steel	Black Oxide	9.8	29.2	20
MYR 10.08	1 Piece(s)	Available	6 Day(s)	6	0.8	[Steel] Steel	Black Oxide	9.8	29.2	30
MYR 10.90	1 Piece(s)	Available	6 Day(s)	6	0.8	[Steel] Steel	Black Oxide	9.8	29.2	40
MYR 11.12	1 Piece(s)	Available	6 Day(s)	8	1	[Steel] Steel	Black Oxide	12.7	39.2	15
MYR 11.28	1 Piece(s)	Available	6 Day(s)	8	1	[Steel] Steel	Black Oxide	12.7	39.2	20
MYR 11.98	1 Piece(s)	Available	6 Day(s)	8	1	[Steel] Steel	Black Oxide	12.7	39.2	30
MYR 13.36	1 Piece(s)	Available	6 Day(s)	8	1	[Steel] Steel	Black Oxide	12.7	39.2	40
MYR 11.98	1 Piece(s)	Available	6 Day(s)	10	1.2	[Steel] Steel	Black Oxide	18.6	49	15
MYR 12.38	1 Piece(s)	Available	6 Day(s)	10	1.2	[Steel] Steel	Black Oxide	18.6	49	20
MYR 12.68	1 Piece(s)	Available	6 Day(s)	10	1.2	[Steel] Steel	Black Oxide	18.6	49	30
MYR 13.36	1 Piece(s)	Available	6 Day(s)	10	1.2	[Steel] Steel	Black Oxide	18.6	49	40
MYR 14.32	1 Piece(s)	Available	6 Day(s)	10	1.2	[Steel] Steel	Black Oxide	18.6	49	50
MYR 12.30	1 Piece(s)	Available	6 Day(s)	12	1.8	[Steel] Steel	Black Oxide	19.6	58.8	25
MYR 13.38	1 Piece(s)	Available	6 Day(s)	12	1.8	[Steel] Steel	Black Oxide	19.6	58.8	30
MYR 14.34	1 Piece(s)	Available	6 Day(s)	12	1.8	[Steel] Steel	Black Oxide	19.6	58.8	40
MYR 18.02	1 Piece(s)	Available	6 Day(s)	16	2.5	[Steel] Steel	Black Oxide	29.4	98	40

Basic Information

Mounting Method	Bolt (cap)	Thread Locking Treatment	Not Provided	Initial Load (Range)(N)	0.01~50
Tip Heat Treatment	Not Provided	Pin Surface Treatment	Not Provided	Shape	Hex Socket Bolt Type

Configure

25 Part Numbers

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Completed

Specification/Dimensions

Outer Dia. M(mm)
4

5

6

8

10

12

16
Clear
Stroke (S)(mm)
0.8

1

1.2

1.8

2.5
Clear
Ball Material
- Steel
  - Steel
- Stainless Steel
  - Stainless Steel
Clear
Initial Load(N)
3.9

4.9

9.8

12.7

18.6

19.6

29.4
Clear
Length L(mm)
10

15

20

25

30

40

50
Clear
type
- E-LBPRH
- E-LBPRL
Clear
Main Body Surface Treatment
- Not Provided
- Black Oxide
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

6 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What role does a ball plunger play?: Answer: It specifies the stroke of the front ball and can be used for temporary positioning and indexing of workpieces.
Question: What role does a spring plunger play?: Answer: With pin-shaped front section, it can be used to eject workpieces or stoppers.
Question: What is the meaning of load min and max?: Answer: The min. load represents the initial load, and the max. load represents the load at the maximum press-in limit of ball head.
Question: What is the anti-loosening treatment of a ball plunger?: Answer: It refers to fixation using anaerobic adhesives filled in microcapsules. A ball plunger will fail once it becomes loosened, so it is necessary to use anaerobic adhesives for threads. An ideal anti-loosening effect will be achieved when placed at a temperature above 25℃ for 72 hours.
Question: Can the knob plunger withstand radial force?: Answer: No, it can only withstand axial force.