---
lang: en
type: Product
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title: "Boltmark 329 Hex Nut BOL-561 - Specs & Details"
description: "Boltmark 329 Hex Nut BOL-561: Thread Size: 1/4-20; Material: Brass; Nut Type: Lock Nut"
llms_summary: "Boltmark 329 Hex Nut BOL-561. (Greenville, South Carolina, United States). Product. Brand Boltmark. Finish Zinc Plated. Grade Grade 5. Height 0.226 in. Material Brass. Model Number BOL-561. Nut Type Lock Nut. Proof Load 3725 (3,725) lbf. Thread Size 1/4-20. Weight per 100 pcs 0.43 lb. Width Across Flats 0.438 in. Product catalogs. Boltmark 329 Hex Nut BOL-561: Thread Size: 1/4-20; Material: Brass; Nut Type: Lock Nut. canonical profile on Structured Pages"
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site: structured-pages
slug: boltmark-329-hex-nut-bol-561
content_sha256: 4f651a23c04a9935e17cb38b79af2a94ceb12c704527c0c5a89d9498eda7ee81
indexed_at: "2026-08-05T14:05:49.391Z"
date_modified: 2026-08-04
license: citation-free
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    slug: boltmark-329-hex-nut-bol-561
    name: Boltmark 329 Hex Nut BOL-561
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---
# Boltmark 329 Hex Nut BOL-561

The Boltmark 329 Hex Nut BOL-561 is a sample hex nuts entry with representative specifications, generated for catalog demonstration purposes.

*Last updated: 2026-08-04*

## Record

- **Title**: [Boltmark 329 Hex Nut BOL-561](https://structuredpages.com/boltmark-329-hex-nut-bol-561/?format=md)
- **Place**: Greenville, South Carolina, United States
- **Use case**: Product catalogs
- **Website**: https://www.boltmark.example.com
- **Phone**: (864) 555-8623
- **Email**: sales@boltmark.example.com
- **Contact address**: Greenville, South Carolina, United States
- **Coordinates**: 34.8526, -82.394
- **CTA**: [Get a Quote](mailto:data@hypersonicseo.com?subject=HVCE%20product%20catalog%20inquiry)
- **CTA note**: Ask about publishing a catalog like this with HVCE - not a quote on this SKU.

### Summary

The Boltmark 329 Hex Nut BOL-561 is a sample hex nuts entry with representative specifications, generated for catalog demonstration purposes.

### Description

The Boltmark 329 Hex Nut BOL-561 is a sample hex nuts entry with representative specifications, generated for catalog demonstration purposes. Representative specifications for this hex nuts entry include Thread Size: 1/4-20; Material: Brass; Nut Type: Lock Nut. This entry illustrates how a real product in this category would appear once structured into HVCE's catalog format, with distinct fields for filtering, comparison, and search. This is placeholder demonstration data, not a real, purchasable product.

### Categories

- hex nuts

### Attributes

| Property | Value |
| --- | --- |
| Brand | Boltmark |
| Finish | Zinc Plated |
| Grade | Grade 5 |
| Height | 0.226 in |
| Material | Brass |
| Model Number | BOL-561 |
| Nut Type | Lock Nut |
| Proof Load | 3725 (3,725) lbf |
| Thread Size | 1/4-20 |
| Weight per 100 pcs | 0.43 lb |
| Width Across Flats | 0.438 in |

## Downloads

- [Specification Sheet](/files/industrial-distribution-demo/shared/specification-sheet.pdf)
- [Certification](/files/industrial-distribution-demo/shared/certification.pdf)
- [Application Notes](/files/industrial-distribution-demo/shared/application-notes.pdf)
- [Installation & Maintenance Guide](/files/industrial-distribution-demo/shared/installation-maintenance-guide.pdf)

## Frequently asked questions

### What are the key specifications of the Boltmark 329 Hex Nut BOL-561?

Published figures list Thread Size: 1/4-20; Material: Brass; Nut Type: Lock Nut.

### What is the thread size of this item?

The thread size is 1/4-20.

### Is the Boltmark 329 Hex Nut BOL-561 suitable for standard fasteners applications?

Yes - this entry represents a typical hex nuts product for this category; a real catalog entry would confirm exact fitment and compliance details.