| Part No. |
Diameter Ref. |
A |
B |
C |
LBRS-16
|
1/2"
|
12.52 - 13.08
|
22.10 - 23.88
|
7.87 - 8.13
|
LBRS-20
|
5/8"
|
15.67 - 16.31
|
27.58 - 30.38
|
9.32 - 10.97
|
LBRS-24
|
3/4"
|
18.80 - 19.56
|
33.73 - 36.53
|
11.56 - 13.46
|
LBRS-28
|
7/8"
|
21.97 - 22.86
|
39.12 - 42.16
|
13.46 - 14.73
|
LBRS-32
|
1 "
|
26.04 - 25.15
|
45.45 - 50.80
|
14.99 - 16.51
|
LBRS-36
|
1-1/8 "
|
27.81 - 28.58
|
50.80 - 53.98
|
16.66 - 18.29
|
LBRS-44
|
1-3/8 "
|
35.56 - 34.29
|
62.74 - 65.79
|
20.70 - 22.35
|
| Grip No. |
Grip Range |
1/2 "(16) |
5/8 " (20) |
3/4 " (24) |
7/8 " (28) |
1 " (32) |
1-1/8 " (36) |
1-3/8 " (44) |
| D |
E | D |
E |
D |
E |
D |
E |
D |
E |
D |
E |
Grip Range |
| 4 |
6.35 - 12.70 |
30.81 |
80.57 |
36.4 |
92.86 |
38.56 |
105.56 |
- |
- |
- |
- |
- |
- |
UP TO 34.25 " Call For Data |
| 8 |
12.70 - 19.05 |
37.16 |
86.92 |
42.75 |
99.21 |
44.91 |
111.91 |
48.79 |
119.08 |
52.65 |
136.53 |
- |
- |
| 12 |
19.05 - 25.40 |
43.51 |
93.27 |
49.1 |
105.56 |
51.26 |
118.26 |
55.14 |
125.43 |
59 |
142.88 |
- |
- |
| 16 |
25.40 - 31.75 |
49.86 |
99.62 |
55.45 |
111.91 |
57.61 |
124.61 |
61.49 |
131.78 |
65.35 |
149.23 |
- |
- |
| 20 |
31.75 - 38.10 |
56.21 |
105.97 |
61.8 |
118.26 |
63.96 |
130.96 |
67.84 |
138.13 |
71.7 |
155.58 |
- |
- |
| 24 |
38.10- 44.45 |
62.56 |
112.32 |
68.15 |
124.61 |
70.31 |
137.31 |
74.19 |
144.48 |
78.05 |
161.93 |
- |
- |
| 28 |
44.45 - 50.80 |
68.91 |
118.67 |
74.5 |
130.96 |
76.66 |
143.66 |
80.54 |
150.83 |
84.4 |
168.28 |
- |
- |
| 32 |
50.80 - 57.15 |
75.26 |
125.02 |
80.85 |
137.31 |
83.01 |
150.01 |
86.89 |
157.18 |
90.75 |
174.63 |
- |
- |
| 36 |
57.15 - 63.50 |
81.61 |
131.37 |
87.2 |
143.66 |
89.36 |
156.36 |
93.24 |
163.53 |
97.1 |
180.98 |
- |
- |
| 40 |
63.50 - 69.85 |
87.96 |
137.72 |
93.55 |
150.01 |
95.71 |
162.71 |
99.59 |
169.88 |
103.45 |
187.33 |
- |
- |
| 44 |
69.85 - 76.20 |
94.31 |
144.07 |
99.9 |
156.36 |
102.06 |
169.06 |
105.94 |
176.23 |
109.8 |
193.68 |
- |
- |
| 48 |
76.20 - 82.55 |
100.66 |
150.42 |
106.25 |
162.71 |
108.41 |
175.41 |
112.29 |
182.58 |
116.15 |
200.03 |
- |
- |
| 52 |
82.55 - 88.90 |
107.01 |
156.77 |
112.6 |
169.06 |
114.76 |
181.76 |
118.64 |
188.93 |
122.5 |
206.38 |
- |
- |
| 56 |
88.90 - 95.25 |
113.36 |
163.12 |
118.95 |
175.41 |
121.11 |
188.11 |
124.99 |
195.28 |
128.85 |
212.73 |
133.35 |
217.50 |
| 60 |
95.25 - 101.6 |
119.71 |
169.47 |
125.3 |
181.76 |
127.46 |
194.46 |
131.34 |
201.63 |
135.2 |
219.08 |
139.7 |
223.85 |
| 64 |
101.60 - 107.95 |
126.06 |
175.82 |
131.65 |
188.11 |
133.81 |
200.81 |
137.69 |
207.98 |
141.55 |
225.43 |
146.05 |
230.20 |
| 68 |
107.95 - 114.30 |
132.41 |
182.17 |
138 |
194.46 |
140.16 |
207.16 |
144.04 |
214.33 |
147.90 |
231.78 |
152.4 |
236.55 |
| 72 |
114.30 - 120.65 |
138.76 |
188.52 |
144.35 |
200.81 |
146.51 |
213.51 |
150.39 |
220.68 |
154.25 |
238.13 |
158.75 |
242.90 |
| 76 |
120.65 - 127.00 |
145.11 |
194.87 |
150.7 |
207.16 |
152.86 |
219.86 |
- |
- |
160.6 |
244.48 |
165.1 |
249.25 |
| 80 |
127.00 - 133.35 |
151.46 |
201.22 |
- |
- |
- |
- |
- |
- |
166.95 |
250.83 |
171.45 |
27.00 |
| 84 |
133.35 - 139.70 |
- |
- |
- |
- |
- |
- |
- |
- |
173.3 |
28.58 |
177.8 |
33.35 |
| 88 |
139.70 - 146.05 |
- |
- |
- |
- |
- |
- |
- |
- |
179.65 |
34.93 |
184.15 |
39.70 |
| 92 |
146.05 - 152.40 |
- |
- |
- |
- |
- |
- |
- |
- |
186.00 |
41.28 |
190.5 |
46.05 |
1. Distinctive Round Head for Versatile Applications
The Round Head design of this PI lockbolt provides a sleek yet highly functional finish, making it ideal for applications where aesthetics and performance go hand in hand. The rounded shape ensures uniform pressure distribution, which reduces material stress and enhances joint integrity. Industries such as transport vehicles, marine construction, and industrial equipment frequently rely on this design to ensure durability and safety without compromising the visual appeal of their projects.
2. Resilient Under Heavy Loads
What sets the PI Large Diameter Lock Bolt Round Head apart is its exceptional tensile strength and vibration resistance. Engineered for extreme conditions, it thrives under high-stress environments such as railway bridges, steel fabrication, and aerospace structures. Whether exposed to seismic vibrations or subjected to heavy mechanical stress, this PI lockbolt ensures components remain securely fastened, delivering peace of mind in critical applications.
3. Engineered with Advanced Coatings
Corrosion resistance is a hallmark of the PI Large Diameter Lock Bolt Round Head. Available in galvanized coatings, zinc finishes, and high-grade stainless steel, these fasteners are designed to combat environmental wear and tear. Be it coastal dockyards or industrial plants, they resist rust and chemical damage, ensuring longevity even in the harshest environments.
4. Compliance with International Standards
At Pankaj International, quality is paramount. This PI lockbolt complies with:
- DIN 6914 (Germany): Covering high-strength structural bolts for steel connections.
- GOST 52644 (Russia): Defining specifications for large-diameter industrial fasteners.
- ISO 3269: Ensuring consistent mechanical properties for heavy-duty applications.
By adhering to these globally recognized standards, we assure our clients of PI lockbolts that are not only reliable but also trusted worldwide.
5. Applications Across Industries
The PI Large Diameter Lock Bolt Round Head finds usage in diverse fields:
- Bridge Engineering: For secure connections in suspension and truss bridges.
- Aerospace Assembly: Designed to withstand high aerodynamic stresses.
- Marine Structures: A corrosion-resistant choice for ships and offshore rigs.
- Industrial Machinery: Providing robust fastening solutions for complex assemblies.
6. Customization for Unique Needs
At Pankaj International, we go beyond the ordinary. Our PI lockbolts can be tailored in dimensions, coatings, and specifications to meet the exact demands of your projects. Additionally, our technical drawings and detailed tables offer comprehensive insights into product specifications, empowering clients to make informed choices.