What are the effects of bolts with different head shapes on hinge opening and closing?

Depending on the height of the bolt head, the exposed height of the bolt may be too high when the hinge is at 0°, which will lead to the failure of the hinge to open and close from 180° to 0°. For the specific calculation, you may refer to the E value in the specification table, which is the value of the circumferential radius. If the hinge needs to reach 0°, the total height of the exposed part must be less than the E value.

What are the advantages of staggered hole type products, and why select staggered hole type products?

Compared with linear hole type products, staggered hole type products are more secure when fixed by screws. By increasing the contact area, the load that can be shared will increase, which is of great help to improve the side load.

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C-HHSN25

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30

40

50

65

75

90

100
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Width (W)(mm)
20

30

50

60
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Shape No.
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- B
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- C-HHSN
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Flat Hinges HHSN

Name: Flat Hinges HHSN
Brand: MISUMI
Availability: InStock

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MISUMI

MiSUMi Economy

MISUMI

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Product Description

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MISUMI India offers high-quality Flat Hinges made from durable stainless steel (SUS304). Designed for screw mounting with round holes, these hinges are ideal for standard operating environments, ensuring reliability and ease of installation.Specifications:
Type: Flat Hinge
Material: Stainless Steel (SUS304)
Mounting Method: Screw Mounting
Mounting Hole Type: Round Hole
Operating Environment: Standard

Product Overview of Flat Hinges

General stainless steel Flat Hinges, divided into A type linear hole products and B type and C type staggered hole products. The drawing shows 2-hole mounted products.
The products are processed with round holes. If you need countersunk products, please refer to tapered hole products. (Tapered hole products do not include staggered hole products. Please pay attention to purchase.)
110310408509 Product Drawings

Product Feature of Flat Hinges

【Features of Flat Hinges】
Round hole stainless steel Flat Hinges, including staggered hole products, with the mounting position adjustable according to actual needs. Pearlescent matte effect on the surface.
It can also be mounted using an ordinary hexagon socket bolt. However, the protrusion of the hexagon socket bolt will influence the opening and closing angle of the of Flat Hinges to a certain extent.

Specifications Overview of Flat Hinges

・Flat Hinges Material table

Material

SUS304

Example Use of Flat Hinges

Example of using the maintenance mechanism for driving part

Precautions of Flat Hinges

To mount the Flat Hinges on the panel, etc., it is recommended to use the nut for butterfly hinge.
Please check the following type to purchase:
HHPNT
HHPFNT
Note: The staggered hole type Flat Hinges is not suitable for the recommended nut, so please pay attention to the selection.

Dimensional Drawing of Flat Hinges

Butterfly Flat Hinges C-HHSN series products Dimensional drawing

Specification Table of Flat Hinges

Part Number (Type·No. or L)

C-HHSN25

Part Number		L	Shape No．	W	W₁	W₂	L₁	L₂	L₃	C	C₁	t	d	Number of segments	^＊Allowable Load (N)	Weight (g)
Type	No.
C-HHSN	25	25	A	20	12	-	16	-	-	2	3.8	0.8	3.4	3	9.8	6
	30	30					22									7
	40	40		30	22		28			3	6.4	1.5			58.8	12
	50	50					36						4.5	5	68.6	16
	65A	65		50	30		23	23		4	8.5	2			127.4	25
	65		B		36	30	22	22
	75A	75	A		30	-	27	27					5.5		147	46
	75		B		36	30	26	26
	90A	90	A	60	38	-	35	35		6	12.7	3	6.6		245	68
	90		B		46	36	34	34
	100A	100	A		38	-	26	26	26						294	100
	100		C		46	36

Please know that the delivery time may be delayed.
＊The allowable load is the value when 2 pieces are used.

Dimensional Drawing

Flat butterfly hinge C-HHSN series products Dimensional drawing

Specification Table

Part Number (Type·No. or L)

C-HHSN25

Part Number		L	Shape No．	W	W₁	W₂	L₁	L₂	L₃	C	C₁	t	d	Number of segments	^＊Allowable Load (N)	Weight (g)
Type	No.
C-HHSN	25	25	A	20	12	-	16	-	-	2	3.8	0.8	3.4	3	9.8	6
	30	30					22									7
	40	40		30	22		28			3	6.4	1.5			58.8	12
	50	50					36						4.5	5	68.6	16
	65A	65		50	30		23	23		4	8.5	2			127.4	25
	65		B		36	30	22	22
	75A	75	A		30	-	27	27					5.5		147	46
	75		B		36	30	26	26
	90A	90	A	60	38	-	35	35		6	12.7	3	6.6		245	68
	90		B		46	36	34	34
	100A	100	A		38	-	26	26	26						294	100
	100		C		46	36

Please know that the delivery time may be delayed.
＊The allowable load is the value when 2 pieces are used.

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
C-HHSN25
C-HHSN30
C-HHSN40
C-HHSN50
C-HHSN65
C-HHSN65A
C-HHSN75
C-HHSN75A
C-HHSN90
C-HHSN90A
C-HHSN100
C-HHSN100A

Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Length (mm)	Width (W) (mm)	Allowable Load (N)	Shape No.
₹ 70.00	1 Piece(s)	Available	Same day	10	25	20	9.8	A
₹ 106.00	1 Piece(s)	Available	Same day	10	30	20	9.8	A
₹ 105.00	1 Piece(s)	Available	Same day	10	40	30	58.8	A
₹ 101.00	1 Piece(s)	Available	Same day	10	50	30	68.6	A
₹ 152.00	1 Piece(s)	Available	Same day	10	65	50	127.4	B
₹ 180.00	1 Piece(s)	Available	Same day	10	65	50	127.4	A
₹ 194.00	1 Piece(s)	Available	Same day	10	75	50	147	B
₹ 194.00	1 Piece(s)	Available	Same day	10	75	50	147	A
₹ 442.00	1 Piece(s)	Available	Same day	10	90	60	245	B
₹ 445.00	1 Piece(s)	Available	Same day	10	90	60	245	A
₹ 336.00	1 Piece(s)	Available	Same day	10	100	60	294	C
₹ 338.00	1 Piece(s)	Available	Same day	10	100	60	294	A

Basic Information

Main Body Type	Standard	Operating Environment	Standard	Mounting Method	Screw Mounting
Additional Function	Not Provided	Mounting Screw Hole Type	Round Hole

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 are the effects of bolts with different head shapes on hinge opening and closing?: Answer: Depending on the height of the bolt head, the exposed height of the bolt may be too high when the hinge is at 0°, which will lead to the failure of the hinge to open and close from 180° to 0°. For the specific calculation, you may refer to the E value in the specification table, which is the value of the circumferential radius. If the hinge needs to reach 0°, the total height of the exposed part must be less than the E value.
Question: What are the advantages of staggered hole type products, and why select staggered hole type products?: Answer: Compared with linear hole type products, staggered hole type products are more secure when fixed by screws. By increasing the contact area, the load that can be shared will increase, which is of great help to improve the side load.

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