Screws with shoulder / drive selectable / stainless steel, steel / precision class / length configurable

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MISUMI

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Back to the Category Fulcrum Pins

Technical Drawing - Fulcrum Pins

Fulcrum Pins/Straight Slot Groove:Related Image

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Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Fulcrum Pins

Straight Slot		Hex Socket			Wrench Flats		Hex Head		Material	Hardness	Surface Treatment
Standard Grade		Standard Grade		Precision Grade	Standard Grade		Standard Grade
D	-0.01 -0.05	D	-0.01 -0.05	Dg6	D	-0.01 -0.05	D	-0.01 -0.05
FCBBD		FCBDBR		FCBDGBR	FCBDBW		FCBDBL		EN 1.1191 Equiv.	-	Black Oxide
FCBBDH		FCBDBRH		-	FCBDBWH		-			40~45HRC
FCBD		FCBDR		FCBDGR	FCBDW		FCBDL		EN 1.4305 Equiv.	-	-

This type may have centering holes depending on dimensions.

HRC hardened products may be discolored by hardening.

Further specifications can be found under the tab More information.

Composition of a Product Code - Fulcrum Pins

Part Number	-	L	-	A	-	E	-	F
FCBBD6 FCBD6	- -	10.0 10.0	- -	A10 A12	- -	E2.5 E3.0	- -	F6 F4

Alterations - Fulcrum Pins

General Information - Fulcrum Pins

Fulcrum Pins Selection Details

- Material: steel, stainless steel

- Coatings: untreated, burnished

- Heat treatment: induction hardened

- Shaft diameter: 4 mm to 20 mm

- Tolerance class of shaft: -0.01mm/+0.05mm, g6

- Thread diameter: M2.6 to M16

- Drive type: hexagon socket, slot, hexagon, key surfaces

Description/Basics

The screwed connection is one of the method most commonly used for detachable connections. Fulcrum pins, also called rotating bolts, have various advantages over conventional screws due to their hardened shaft.

The head of our rotating bolts is in part flatter than that of a stripper bolt, which, in combination with the various drive forms, simplifies the assembly in tight installation spaces. Similar to stripper bolts, Fulcrum pins have a tight-tolerance shaft that can be additionally hardened. This allows designing a simple bearing or guide.

When designing a swivel lock, a combination of Fulcrum pins and links are recommended. This allows, for example, to lock a solid closure. In this case, the rotary bolt can serve both as a bearing point and as an end stop. Its hardened approach offers suitable protection against premature wear in both functions.

Due to the ability to absorb transverse forces and shear forces, bearing bolts with hardened shoulders are suitable for creating a hinge assembly.
Combined with rod end bearings, there is also the option of balancing an offset.

Application Examples - Fulcrum Pins

Application example - Fulcrum pin utilised as spacer
1.Fulcrum pin, 2. Flat steel, 3. Nuts , 4. Flat steel

Application Example - Fulcrum pin utilised as bearing point
1.Fulcrum pin, 2. Links, 3. Hex nut, 4. Flat steel

Application example - Fulcrum pin utilised as stopper point
1. Fulcrum pin, 2. Links

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

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Part Number
FCBDBL4-[1-20/0.1]-E[2-4/0.1]-F[3,4]
FCBDBL5-[1-20/0.1]-E[2-4/0.1]-F[3-6/1]
FCBDBL6-[1-20/0.1]-E[2.5-4.5/0.1]-F[4-8/1]
FCBDBL8-[1-20/0.1]-E[2.5-4.5/0.1]-F[5-10/1]
FCBDBL10-[1-30/0.1]-E[3-5/0.1]-F[6-12/1]
FCBDBL12-[1-30/0.1]-E[3-5/0.1]-F[8-12/1]
FCBDBL13-[1-30/0.1]-E[3-5/0.1]-F[8-12/1]
FCBDBL15-[1-30/0.1]-E[3-5/0.1]-F[10-15/1]
FCBDL4-[1-20/0.1]-E[2-4/0.1]-F[3,4]
FCBDL5-[1-20/0.1]-E[2-4/0.1]-F[3-6/1]
FCBDL6-[1-20/0.1]-E[2.5-4.5/0.1]-F[4-8/1]
FCBDL8-[1-20/0.1]-E[2.5-4.5/0.1]-F[5-10/1]
FCBDL10-[1-30/0.1]-E[3-5/0.1]-F[6-12/1]
FCBDL12-[1-30/0.1]-E[3-5/0.1]-F[8-12/1]
FCBDL13-[1-30/0.1]-E[3-5/0.1]-F[8-12/1]
FCBDL15-[1-30/0.1]-E[3-5/0.1]-F[10-15/1]

Minimum order quantity	Standard Shipping Days ?	RoHS	Basic Shape	Shaft Dia. D (mm)	Shaft Tolerance	Thread Dia.	Material	Hardness	Surface Treatment	Precision	Material Detail	Detailed Hardness	A (mm)	E (mm)	F (mm)	L (mm)
1	4 Days	10	Hex Head	4	Standard Grade (-0.01/-0.05)	2.6	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	2 ～ 4	3 ～ 4	1 ～ 20
1	4 Days	10	Hex Head	5	Standard Grade (-0.01/-0.05)	3	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	2 ～ 4	3 ～ 6	1 ～ 20
1	4 Days	10	Hex Head	6	Standard Grade (-0.01/-0.05)	4	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	2.5 ～ 4.5	4 ～ 8	1 ～ 20
1	4 Days	10	Hex Head	8	Standard Grade (-0.01/-0.05)	5	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	2.5 ～ 4.5	5 ～ 10	1 ～ 20
1	4 Days	10	Hex Head	10	Standard Grade (-0.01/-0.05)	6	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	3 ～ 5	6 ～ 12	1 ～ 30
1	4 Days	10	Hex Head	12	Standard Grade (-0.01/-0.05)	8	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	3 ～ 5	8 ～ 12	1 ～ 30
1	4 Days	10	Hex Head	13	Standard Grade (-0.01/-0.05)	8	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	3 ～ 5	8 ～ 12	1 ～ 30
1	4 Days	10	Hex Head	15	Standard Grade (-0.01/-0.05)	10	EN 1.1191 Equiv.	No Hardened	Black Oxide	Standard Grade (-0.01/-0.05)	EN 1.1191 Equiv.	No Hardened	-	3 ～ 5	10 ～ 15	1 ～ 30
1	3 Days	10	Hex Head	4	Standard Grade (-0.01/-0.05)	2.6	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	2 ～ 4	3 ～ 4	1 ～ 20
1	3 Days	10	Hex Head	5	Standard Grade (-0.01/-0.05)	3	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	2 ～ 4	3 ～ 6	1 ～ 20
1	3 Days	10	Hex Head	6	Standard Grade (-0.01/-0.05)	4	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	2.5 ～ 4.5	4 ～ 8	1 ～ 20
1	3 Days	10	Hex Head	8	Standard Grade (-0.01/-0.05)	5	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	2.5 ～ 4.5	5 ～ 10	1 ～ 20
1	3 Days	10	Hex Head	10	Standard Grade (-0.01/-0.05)	6	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	3 ～ 5	6 ～ 12	1 ～ 30
1	3 Days	10	Hex Head	12	Standard Grade (-0.01/-0.05)	8	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	3 ～ 5	8 ～ 12	1 ～ 30
1	3 Days	10	Hex Head	13	Standard Grade (-0.01/-0.05)	8	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	3 ～ 5	8 ～ 12	1 ～ 30
1	3 Days	10	Hex Head	15	Standard Grade (-0.01/-0.05)	10	EN 1.4305 Equiv.	No Hardened	Not Provided	Standard Grade (-0.01/-0.05)	EN 1.4305 Equiv.	No Hardened	-	3 ～ 5	10 ～ 15	1 ～ 30

Back to the Category Fulcrum Screws

Technical Drawing - Fulcrum Pins

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Specification Tables - Fulcrum Pins

∙ Precision Grade

D Tolerance (g6)
4~6	-0.004 -0.012
8, 10	-0.005 -0.014
12~15	-0.006 -0.017

■ L Dimension Tolerance

	Configurable
Unhardened	+0.1 0
Hardened	+0.2 0

■ Configurable

Part Number			L=0.1mm Increment	A Selection For Hex Head, selection is not needed.				E=0.1mm Increment	F=1mm Increment	MxP (Coarse)	ℓ	W	B	h	h₁	C	W₁	G
Type		D
Straight Slot (Standard) FCBBD FCBBDH *FCBD Hex Socket (Standard) FCBDBR FCBDBRH FCBDR Hex Socket (Precision) FCBDGBR FCBDGR	Wrench Flats (Standard) FCBDBW FCBDBWH FCBDW Hex Head (Standard) FCBDBL FCBDL	4	Straight Slot Wrench Flats Hex Head 1.0~20.0 Hex Socket 5.0~20.0	6	8			2.0~4.0	3, 4	2.6x0.45	0.8	0.8	2	1	2	0.5	5	7
		5		8	10				3~6	3x0.5	1		2.5		2.5		7	8
		6		10	12			2.5~4.5	4~8	4x0.7	1.2	1.2	3	1.5	3		8	10
		8		12	16				5~10	5x0.8	1.4		4		3.5	1	10	13
		10		16	18	20		3.0~5.0	6~12	6x1.0	1.5	1.4	5	1.8	4		13	17
		12		18	20	22	24		8~12	8x1.25		1.5		2			14	19
		13										-		-			15
		15		20	22	24			10~15	10 x1.5							17

Machining Conditions FCBDBR, FCBDBRH and FCBDR, E+L≥2xh1+2 D13 and D15 are not available for the * marked types.

Alterations - Fulcrum Pins

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Basic Attributes

Shaft Dia. D(mm)
4

5

6

8

10

12

13

15
Clear
Shaft Tolerance
Precision Grade (g6)

Standard Grade (-0.01/-0.05)
Clear
Thread Dia.
2.6

3

4

5

6

8

10
Clear
Material
- EN 1.1191 Equiv.
- EN 1.4305 Equiv.
Clear
Hardness
- Hardened
- No Hardened
Clear
Surface Treatment
- Black Oxide
- Not Provided
Clear
Precision
- Standard Grade (-0.01/-0.05)
- Precision Grade (g6)
Clear
Material Detail
- EN 1.1191 Equiv.
- EN 1.4305 Equiv.
Clear
Detailed Hardness
- 40 - 45HRC
- No Hardened
Clear
A(mm)
6

8

10

12

16

18

20

22

24
Clear
E(mm)
[2-5/0.1mm Unit(s)]
Clear
F(mm)
3

4
[3-15/1mm Unit(s)]
Clear
L(mm)
[1-30/0.1mm Unit(s)]
Clear
Type
- FCBBD
- FCBBDH
- FCBD
- FCBDBL
- FCBDBR
- FCBDBRH
- FCBDBW
- FCBDBWH
- FCBDGBR
- FCBDGR
- FCBDL
- FCBDR
- FCBDW
Clear
Basic Shape
- Hex Socket
- Straight Slot Groove
- Wrench Flats
- Hex Head
Clear
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Optional Attributes

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

Frequently Asked Questions (FAQ)

Question:
Why do fulcrum pins have a shaft?: Answer:
The shank of the fulcrum pin serves primarily as a bearing or pivot point. In addition, the hardened shank can be used as a stopper.
Another advantage may be that the assembly parts can be reduced by using the fulcrum pin with as a spacer.
Question:
Are the fulcrum pins offered comparable with the DIN 923?: Answer:
In principle, the fulcrum pin and the slotted drive from MISUMI are similar to DIN 923. However, the dimensions differ. For example, the head diameter of the pivot bolt from MISUMI is up to one millimetre larger.
Question:
What is the difference between a fitted screw and the socket with pin?: Answer:
A fulcrum pin has a less tightly tolerated shank than the shoulder bolts. Therefore, it is more suitable for simpler applications that are less focused on precision. Likewise, the length and diameter of the shank are not freely configurable for all fulcrum pins.
Question:
What does the M stand for in the specification of the nominal thread diameter?: Answer:
The code letter M indicates that the screw has a metric ISO thread. The metric ISO thread differs fundamentally from standard threads (rough threads) and fine threads. Assembly parts equipped with an M-thread and the same thread size are compatible with each other (example: M8 screw/M8 nut).