Hex Cup Nut

Description:

Hex cup nuts from ITA Fasteners are known for both their safety of usage and the aesthetic edge it provides the structure. The cups which come on one side of the nut provides security by protecting its surrounding objects from structural tears and breakages in case of forceful mishaps. It provides a visually appealing edge by giving the structure a finished and polished look. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant.

These nuts are self-locking and come in varying sizes to accommodate the different sizes of externally threaded screws. The edges of the protruding screws are protected by the cups. Since they are self-locking, the structure is also protected against the adverse effects of vibrations and small movements.

Dimensional Standards:

Is1364, ISO 4014, ISO 4017, DIN 933, DIN 931, BS 1083, BS 1768, ASME B18.2.1, JIS B1180

Size range:

Metric: M2 to M42
Inches: 1/4” to 2”

HEX CUP NUT

DIN 917 - Hexagon Cup Nuts - Low Pattern

Equivalent norms: CSN 21431; PN 82182;

Legend:
s - size of the hexagon
m - height of the nut
d - the nominal diameter of the thread
t - hole depth
Makings:
Steel: 6
Stainless:A2,A4
Plastic:-
Non Ferrous: Brass
Thread: 6H
Notes:
Table according to DIN 917:
dimensions in mm

Thread d	Series 1	M4	M5	M6	M8	M10		M12		(M14)		M16	(M18)	M20
	Series 2	-	-	-	M8x1	M10x1		M12x1,5		(M14x1,5)		M16x1,5	(M18x1,5)	M20x2
	Series 3	-	-	-	-	M10x1,25		M12x1,25		-		-	(M18x2)	M20x1,5
P		0,7	0,8	1	1,25	1,5		1,75		2		2	2,5	2,5
da	min.	4	5	6	8	10		13		15,1		17,3	19,5	21,6
da	max.	4,6	5,75	6,75	8,75	10,8		13		15,1		17,3	19,5	21,6
dw	min.	5,8	6,8	8,8	11,3	14,3	15,3	16,2	17,2	19,2	20,2	22,2	25,3	28,2
e	min.	7,66	8,79	11,05	14,38	17,77	18,9	20,03	21,1	23,35	24,49	26,75	29,56	32,95
x2	max. Series 1	1,05	1,2	1,5	1,87	2,25		-		-		-	-	-
x2	max.Series 2	-	-	-	1,5	1,5		-		-		-	-	-
x2	max. Series 3	-	-	-	-	1,87		-		-		-	-	-
g	max. Series 1	-	-	-	-	-		6,4		7,3		7,3	9,3	9,3
	max. Series 2	-	-	-	-	-		5,6		5,6		5,6	5,6	7,3
	max. Series 3	-	-	-	-	-		4,9		-		-	7,3	5,6
h	nominal = max.	5,5	7	9	12	14		16		18		20	22	25
h	min.	5,2	6,64	8,64	11,57	13,57		15,57		17,57		19,48	21,48	24,48
m´	min.	2,75	3,5	4,5	6	7		8		9		10	11	12,5
r	approx.	8	10	12	15	20		25		28		30	32	35
s	nominal = max.	7	8	10	13	16	17	18	19	21	22	24	27	30
s	min.	6,78	7,78	9,78	12,73	15,73	16,73	17,73	18,67	20,67	21,67	23,67	26,16	29,16
t	min.	4,16	4,96	6,71	9,21	10,65		13,15		14,65		16,65	18,58	20,58
t	max.	4,64	5,44	7,29	9,79	11,35		13,85		15,35		17,35	19,42	21,42
w	min.	1	1	1,5	2	2		2		2		2	2	2,5
Weight (7,85kg/dm3) for 1000 umits, in		1,31	2,2	4,29	9,5	-	19,3	-	25,5	-	37	48,1	70	94,1
kg.

DIN 917 - Hexagon Cup Nuts - Inches

One Piece Cap (Acorn) Closed-End Hex Cap Nuts, Low Crown

Nominal Size or Basic Major Diameter of thread		Width Across Flats (F)		Width Across Corners (G)		Body Diameter (A)	Overall Height(H)	Hexagon Height(Q)	Drill Depth(T)	Full Thread(U)
		Max	Min	Max	Min	Body Diameter (A)	Overall Height(H)	Hexagon Height(Q)			Max	Min
6	0.1380	0.3125	0.302	0.361	0.344	0.30	0.34	0.16	0.25	0.16
8	0.1640	0.3125	0.302	0.361	0.344	0.30	0.34	0.16	0.25	0.16
10	0.1900	0.3750	0.362	0.433	0.413	0.36	0.41	0.19	0.28	0.19
1/4	0.2500	0.4375	0.428	0.505	0.488	0.41	0.47	0.22	0.34	0.25
5/16	0.3125	0.5000	0.489	0.577	0.557	0.47	0.53	0.25	0.41	0.31
3/8	0.3750	0.5625	0.551	0.650	0.628	0.53	0.62	0.28	0.45	0.38
1/2	0.5000	0.7500	0.736	0.866	0.840	0.72	0.81	0.38	0.59	0.50
5/8	0.6250	0.9375	0.922	1.083	1.051	0.91	1.00	0.47	0.75	0.62
3/4	0.7500	1.0625	1.045	1.227	1.191	1.03	1.16	0.53	0.88	0.75

Two Piece Closed-End Hex Cap Nuts

Nominal Size or Basic Major Diameter of Thread		Width Across Flats (F)		Width Across Corners(G)		Overall Height(H)
		Max	Min	Max	Min	Max	Min
4	0.1120	0.248	0.225	-	-	0.200	0.177
5	0.1250	0.3125	0.302	0.361	0.344	0.260	0.240
6	0.1380	0.3125	0.302	0.361	0.344	0.260	0.240
8	0.1640	0.3125	0.302	0.361	0.344	0.260	0.240
10	0.1900	0.3750	0.362	0.433	0.413	0.291	0.271
1/4	0.2500	0.4375	0.423	0.505	0.482	0.338	0.318
5/16	0.3125	0.562	0.545	0.650	0.621	0.385	0.365
3/8	0.3750	0.625	0.607	0.722	0.692	0.432	0.412
7/16	0.4375	0.673	0.659	0.775	0.750	0.680	0.660
1/2	0.5000	0.750	0.736	0.866	0.840	0.572	0.552
9/16	0.5625	0.875	0.861	1.010	0.982	0.482	0.462
5/8	0.6250	0.938	0.909	1.083	1.037	0.807	0.787
3/4	0.7500	1.12	1.08	-	-	1.12	1.08
7/8	0.8750	1.250	1.212	1.443	1.382	1.420	1.380